Detailed Design

 

Requested by:                 Mr. Ken Swarner

                                      Systems Administrator

                                      Computer Science Department of Siena College

 

 

 

 

 

 

 

 

TCP/IP Packet Descriptor

 

 

Mirage Incorporated

“We are there…even if you cannot see us”

Mirageinc2003@yahoo.com

 

 

 

 

 

Prepared by:                             Paul Aiuto

                                      Richard Connell

                                      Lauren Englisbe

                                      Jayme Gresen, Team Leader

                                      Jeffrey Habiniak

 

 

Preliminary Design

Table of Contents

1.0  External Design Specifications

 

4

     1.1 User Displays

4-14

 

     1.2 User Command Summary

15

 

     1.3 Detailed Data Flow Diagrams

16-18

 

2.0 Architectural Design Specification

19

 

     2.1 User Commands (AKA “Clickable Buttons”)

19

 

     2.2 Functional Descriptions

20

 

       2.2.1 IP PDU for the selected FTP PDU

20-33

 

       2.2.2 TCP PDU for the selected FTP PDU

34-44

 

       2.2.3 FTP PDU for the selected FTP PDU

45

 

       2.2.4 IP PDU for the selected ICMP PDU

46-58

 

       2.2.5 ICMP PDU for the selected ICMP PDU

59-65

 

       2.2.6 IP PDU for the selected SMTP PDU

66-79

 

       2.2.7 TCP PDU for the selected SMTP PDU

80-90

 

       2.2.8 SMTP PDU for the selected SMTP PDU

91-93

 

       2.2.9 IP PDU for the selected UDP PDU

94-113

 

       2.2.10 UDP PDU for the selected UDP PDU

114-118

 

       2.2.11 IP PDU for the selected SNMP PDU

119-130

 

       2.2.12 UDP PDU for the selected SNMP PDU

131-135

 

       2.2.13 SNMP PDU for the selected SNMP PDU

136-144

 

       2.2.14 IP PDU for the selected TELNET PDU

145-156

 

       2.2.15 TCP PDU for the selected TELNET PDU

157-167

 

       2.2.16 TELNET PDU for the selected TELNET PDU

168

 

       2.2.17 IP PDU for the selected SSH PDU

169-180

 

       2.2.18 TCP PDU for the selected SSH PDU

181-190

 

       2.2.19 SSH PDU for the selected SSH PDU

191-192

       2.2.20 ARP PDU for the selected ARP PDU

193-204

 

       2.2.21 IP PDU for the selected PING PDU

205-212

 

       2.2.22 ICMP PDU for the selected PING PDU

213-220

 

       2.2.23 IP PDU for the selected HTTP PDU

221-234

 

       2.2.24 TCP PDU for the selected HTTP PDU

235-244

 

       2.2.25 HTTP PDU for the selected HTTP PDU

245-262

 

3.0 Testing Requirements

263

 

    3.1 Testing Overview

263

 

    3.2 Test Cases

263

 

    3.3 Testing Sheets

264

 

       3.3.1 Functional Requirements Testing Sheet

264-265

 

       3.3.2 Ethernet Testing Sheet

266-267

 

       3.3.3 IP Testing Sheet

268-270

 

       3.3.4 TCP Testing Sheet

271-273

 

       3.3.5 FTP Testing Sheet

274

 

       3.3.6 ICMP Testing Sheet

275-276

 

       3.3.7 SMTP Testing Sheet

277

 

       3.3.8 UDP Testing Sheet

278

 

       3.3.9 SNMP Testing Sheet

279-280

 

       3.3.10 TELNET Testing Sheet

281

 

       3.3.11 SSH Testing Sheet

282

 

       3.3.10 ARP Testing Sheet

283-284

 

       3.3.11 PING Testing Sheet

285-287

 

       3.3.12 HTTP Testing Sheet

288-289

4.0 Detailed Design Specification

290

   4.1 Packaging and Deployment Specifications

290

5.0 Appendix

291

   5.1 Gantt Chart

291

   5.1 Glossary

292-294

1.0 External Design Specifications

 

1.1  User Displays

 

 

            This will be the first screen the user sees.  It is the introduction screen to our software, and presents our mascot, “The Descript-roar”.

 

This is the first functional screen the user will see.  It allows the user to see what an Ethernet Packet looks like, and eventually each frame within that packet will be clickable and able to display information about that frame.

 

            The “Choose a Protocol” menu gives the user a graphical representation of how protocols are interrelated, and allows the desired protocol to be selected.

 

            Once a protocol has been selected by the user, this screen will display.  The basis for our protocol suite, the IP PDU is displayed on the left, filled in with the given data for the selected protocol.  The user is able to click on any field in the IP PDU, and an information box will display on the right, describing that field.  In the IP PDU Data field, “TCP PDU” is written – this indicates that the entire TCP PDU is contained within the IP Data field.  If the user clicks on this field, the TCP PDU will be displayed.

 

The PDU’s are tabbed on their lower left corners: this allows the user to navigate between them.  Additionally, there is a key at the top right corner to display what PDUs make up the chosen protocol.  The user may also click on any PDU in this map to navigate.  If at any point, the user wants to choose a different protocol to view, he or she may click on the “Choose a Protocol” button in the top left corner.

 

The next screen shows the TCP PDU on top of the IP PDU.  This is meant to show that the TCP PDU is contained within the IP PDU.  Additionally, the Telnet PDU is contained within the TCP PDU Data field, so clicking on that field will display the Telnet PDU.  As with IP, if a TCP field is clicked, the information for that field will be displayed in the information box at the right.

 

This is the software with all the information displayed for the selected Telnet PDU.  The IP PDU gives rise to the TCP PDU, and the TCP Data field has been clicked, which allows us to see the information field for the Telnet PDU on the right.

 

This is a screenshot of the ARP protocol and its information field.

 

FTP Protocol

 

HTTP Protocol

 

PING Protocol

 

SSH Protocol

 

UDP Protocol
1.2 User Command Summary

Main Screen

This is the screen giving the user the option to choose many different packets.

PDU Hierarchy Tree

Allows the user to see their progression through the many packets, and also able to choose their desired packet.

 

IP Version

Allows the user two chooses of two different IP Versions.

 

Radix (Base) Selection

Allows the user to select a radix to display.

 

Information Box

Allows the user to see the given information for a selected field.

 

1.3 Detailed Data Flow Diagrams

 

Level 0 Diagram:

 

Context Diagram:

 

Detailed Diagram:

 

 

 

 

2.0 Architectural Design Specifications

 

2.1 User Commands (AKA “Clickable Buttons”)

 

IP PDU

 

IP Version

Internet Header Length

Type of Service

Total Length of Ethernet Frame

Identification

Flags

Fragment Offset

Time to Live

Protocol

Header Checksum

Source IP Address

Destination IP Address

Options

Data

 

TCP PDU

 

Source Port Number

Destination Port Number

Sequence Number

Acknowledgement Number

Header Lengths

Reserved

Window Size

TCP Checksum

Urgent Pointer

Options

Data

 

2.2 Functional Descriptions

 

2.2.1 IP PDU for the selected FTP PDU

 

IP PDU > IP Version for the selected FTP PDU

 

Field Name: IP Version

 

Purpose and Definition:  Version is a 4-bit field that indicates the format of the internet header.

 

Field Key:       4 = IPv4

            6 = IPv6

 

Data value (decimal):  4

 

Data values in other bases:

 

Hexadecimal

4

Binary

0100

Decimal

4

 

Programming Hint: The name for this variable in code will be IP_IPVersion_FTP.

IP PDU > Internet Header Length for the selected FTP PDU

 

Field Name:  Internet Header Length

 

Purpose and Definition:  The IHL field is a 4-bit field indicating the length of the internet header in 32 bit words, and thus points to the beginning of the data.  The minimum value of a correct header is 5.

 

Field Key:  Not applicable

 

Data value:  The value contained in our field is 20 bytes.  This is the hexadecimal and decimal value of 5 multiplied by 4 bits.

 

Data values in other bases:

 

Hexadecimal

0

5

Binary

0000

0101

Decimal

5

 

Programming Hint: The name for this variable in code will be IP_IHL_FTP.

IP PDU > Type of Service for the selected FTP PDU

 

Field Name:  Type of Service

 

Purpose and Definition:  Type of Service is an 8-bit field that provides and indication of the abstract parameters of the quality of service desired.  These parameters guide the selection of the actual service parameters when transmitting a datagram through a particular network.

 

Field Key:  The major choice is a three-way tradeoff between low-delay, high-reliability, and high-throughput.

 

 

 

 


Bits 0-2: Precedence

Bit 3: (D)  0 = Normal Delay                1 = Low Delay

Bit 4: (T)  0 = Normal Throughput        1 = High Throughput

Bit 5: (R)  0 = Normal Reliability           1 = High Reliability

 

Precedence:

            111 = Network Control                        011 = Flash

            110 = Inter-network Control                010 = Immediate

            101 = CRITIC/ECP                             001 = Priority

            100 = Flash Overrided             000 = Routine

 

Data value (hexadecimal): 10

 

Data values in other bases:

 

Hexadecimal

1

0

Binary

0001

0000

Decimal

16

 

Programming Hint: The name for this variable in code will be IP_TypeOfService_FTP.

IP PDU > Total Length of Ethernet Frame for the selected FTP PDU

 

Field Name: Total Length of Ethernet Frame

 

Purpose and Definition: Total Length is a 16-bit field that indicates the length of the frame, measured in octets, including internet header and data.  The maximum size is 216-1 or 65,535 octets; however, the recommended maximum size is 576 octets.

 

Field Key:  Not applicable

 

Data values (hexadecimal):  69

 

Data values in other bases:

 

Hexadecimal

0

0

6

9

Binary

0000

0000

0110

1001

Decimal

0

105

ASCII

©

i

 

Programming Hint: The name for this variable in code will be IP_TotalLength_FTP.

IP PDU > Identification for the selected FTP PDU

 

Field Name:  Identification

 

Purpose and Definition:  Identification is a 16-bit field.  An identifying value is assigned by the sender to aid in assembling the fragments of a datagram.  The identifier is chosen based on the need to provide a way to uniquely identify the fragments and protocol for the time the datagram or any fragment could be alive in the internet.

 

Field Key:  Not applicable

 

Data value (hexadecimal): AA 41

 

Data values in other bases:

 

Hexadecimal

A

A

4

1

Binary

1010

1010

0100

0001

 

Programming Hint: The name for this variable in code will be IP_Idenfification_FTP.

IP PDU > Flags for the selected FTP PDU

 

Field Name:  Flags

 

Purpose and Definition:  Flags is a 3-bit field that indicates directions for fragmentation.

 

Field Key:

Bit 0: reserved, must be 0

Bit 1: (DF)  0 = May Fragment             1 = Don’t Fragment

Bit 2: (MF) 0 = Last Fragment              1 = More Fragment

 

Data value (binary): 010

 

Data values in other bases:  Not applicable

 

Programming Hint: The name for this variable in code will be IP_Flags_FTP.

 

IP PDU > Fragment Offset for the selected FTP PDU

 

Field Name:  Fragment Offset

 

Purpose and Definition:  The Fragment Offset is a 13- bit field indicating where in the Ethernet frame this fragment begins.  The Fragment Offset is measured in units of 8 octets, and the first fragment has offset 0.

 

Field Key:  Not applicable

 

Data value (decimal): 0

 

Data values in other bases:

Binary: 0 0000 0000 0000

 

Programming Hint: The name for this variable in code will be IP_FragmentOffset_FTP.

IP PDU > Time to Live for the selected FTP PDU

 

Field Name: Time to Live

 

Purpose and Definition:  Time to Live is an 8-bit field that indicates the maximum time the datagram is allowed to remain in the internet.  If this field contains the value 0, then the datagram must be destroyed.  This field is modified in internet header processing.  The time is measure in units of seconds, and is set by the sender to the maximum time the datagram is allowed to be in the internet.  This field is decreased at each point that the internet header is processed.  The intention is to cause undeliverable packets to be discarded, and to bind the maximum datagram lifetime.

 

Field Key:  Not applicable

 

Data value (decimal): 64

 

Data values in other bases:

 

Hexadecimal

4

0

Binary

0100

0000

Decimal

64

 

Programming Hint: The name for this variable in code will be IP_TimeToLive_FTP.

IP PDU > Protocol for the selected FTP PDU

 

Field Name:  Protocol

 

Purpose and Definition:  Protocol is an 8-bit field that indicates the next level protocol that is used in the data portion of the internet diagram.

 

Field Key:

Dec Hex         Protocol                                                          Dec                 Hex        Protocol

0            00      Reserved                                                          22                    16           Multiplexing

1            01      ICMP                                                              23                    17           DCN

2            02      Unassigned                                                       24                    18           TAC Monitoring       

3            03      Gateway-to-Gateway                                       25-76               19-4C     Unassigned               

4            04      CMCC Gateway Monitoring Message  77                    4D          Any local network

5            05      ST                                                                    100                  64           SATNET and Backroom EXPAK

6            06      TCP                                                                 101                  65           MIT Subnet Support

7            07      UCL                                                                102-104           66-68      Unassigned

10          0A     Unassigned                                                       105                  69           SATNET Monitoring

11          0B      Secure                                                              106                  6A          Unassigned

12          0C     BBN RCC Monitoring                          107                  6B           Internet Packet Core Utility

13          0D     NVP                                                                110-113           6E-71     Unassigned

14          0E      PUP                                                                 114                  72           Backroom SATNET Monitoring

15          0F      Pluribus                                                            115                  73           Unassigned

16        10       Telnet                                                               116                  74           WIDEBAND Monitoring

17        11       XNET                                                              117                  75           WIDEBAND EXPAK

20        14       Chaos                                                              120-376           78-0178  Unassigned

21        15       User Datagram                                     377                  0179        Reserved

 

Data value (hexadecimal): 06

 

Data values in other bases:

 

Hexadecimal

0

6

Binary

0000

0110

Decimal

6

 

RFC Link: http://www.faqs.org/rfcs/rfc790.html

 

Programming Hint: The name for this variable in code will be IP_Protocol_FTP.

IP PDU > Header Checksum for the selected FTP PDU

 

Field Name:  Header Checksum

 

Purpose and Definition:  The Header Checksum is a 16-bit field.  The Checksum is the 16-bit one’s complement sum of all 16-bit words in the header.  For purposes of computing the checksum, the initial value of its field is zero.  When both header checksums are equal, then the header bits are correct.  If either checksums vary, then a new, correct packet will need to be sent.

 

This is a simple way to compute the checksum and experimental evidence indicates that it is adequate, but it is provisional and may be replaced by a CRC procedure, depending on further experience.

 

Field Key:  Not applicable

 

Data value (hexadecimal): 0E 85

 

Data values in other bases:

 

Hexadecimal

0

E

8

5

Binary

0000

1110

1000

0101

 

Programming Hint: The name for this variable in code will be IP_HeaderChecksum_FTP.

IP PDU > Source Address for the selected FTP PDU

 

Field Name:  Source Address

 

Purpose and Definition:  The Source Address is a 32-bit field that contains the IP address of the host that sent the IP Packet.

 

Field Key:  Not applicable

 

Data value (decimal):  192.168.0.39

 

Data values in other bases:

 

Hexadecimal

C

0

A

8

0

0

2

7

Binary

1100

0000

1010

1000

0000

0000

0010

0111

Decimal

192

168

0

39

 

Programming Hint: The name for this variable in code will be IP_SourceAddress_FTP.

IP PDU > Destination Address for the selected FTP PDU

 

Field Name:  Destination Address

 

Purpose and Definition:  The Destination Address is a 32-bit field that contains the address of the host that is to receive the data contained within the IP packet.

 

Field Key: Not applicable

 

Data value (decimal):  192.168.0.101

 

Data values in other bases:

 

Hexadecimal

C

0

A

8

0

0

6

5

Binary

1100

0000

1010

1000

0000

0000

0110

0101

Decimal

192

168

0

101

 

Programming Hint: The name for this variable in code will be IP_DestinationAddress_FTP.

IP PDU > Options and Padding for the selected FTP PDU

 

Field Name:  Options and Padding

 

Purpose and Definition:  The options may or may not appear in Ethernet packets.  They must be implemented by all IP modules (host and gateways).  What is optional is their transmission in any particular packet, not their implementation.

 

The option field is variable in length.  There may be zero or more options.  There are two cases for the format of an option.

            Case 1: A single octet of option type

            Case 2: An option-type octet, an option-length octet, and the actual option-data                                    octets.

 

Field Key:  Not applicable

 

Data values:  Not applicable

 

Data values in other bases:  Not applicable

 

Programming Hint: The name for this variable in code will be IP_OptionsPadding_FTP.

 

IP PDU > Data for the selected FTP PDU

 

Field Name:  Data

 

Purpose and Definition:  The Data is a variable length field which contains the actual data that is being sent from one host to another.  The data field may start with a Layer 4 header, which will give additional instructions to the application that will be receiving the data; alternately, it may be an ICMP header and not contain any user data at all.

 

Field Key:  Not applicable

 

Data values (hexadecimal) :  (TCP) 80 30 00 15 81 A5 16 6C 87 A3 53 5D 80 18 16 D0 11 F4 00 00 01 01 08 0A 1B 25 F3 A1 0b DD 73 58

(FTP) 50 41 53 53 20 66 31 61 32 6B 33 75 73 65 72 0D 0A

 

Data values in other bases:

Hexadecimal: (TCP) 0 x 80 30 00 15 81 A5 16 6C 87 A3 53 5D 80 18 16 D0 11 F4 00 00 01 01 08 0A 1B 25 F3 A1 0B DD 73 58

(FTP) 50 41 53 53 20 66 31 61 32 6B 33 75 73 65 72 0D 0A

 

ASCII:  (TCP) ↑ 0 © © ↑ ↑ © ↑ ↑ S ] ↑ © © ↑ © ↑ © © © © © © © % ↑ ↑ © ↑ s X

(FTP) P A S S S © f 1 a 2 k 3 u s e r © ©

 

Programming Hint: The name for this variable in code will be IP_Data_FTP.

 

 

2.2.2 TCP PDU for the selected FTP PDU

 

IP > TCP PDU > Source Port for the selected FTP PDU

 

Field Name:  Source Port

 

Purpose and Definition:

This 16-bit number represents the name of the application that sent the data in the IP packet.

 

Field Key:  Not applicable

 

Data value (decimal): 32816

 

Data values in other bases:

 

Hexadecimal

8

0

3

0

Binary

1000

0000

0011

0000

Decimal

128

48

ASCII

á

0

 

Programming Hint: The name for this variable in code will be IP_TCP_SourcePort_FTP.

IP > TCP PDU > Destination Port for the selected FTP PDU

 

Field Name: Destination Port

 

Purpose and Definition:
This 16-bit number represents the name of the application that is to receive the data contained within the IP packet. This is one of the major differences between a Layer 3 and a Layer 4 header: the Layer 3 header contains the IP address of the computer that is to receive the IP packet; once that packet has been received, the port address in the Layer 4 header ensures that the data contained within that IP packet is passed to the correct application on that computer.

 

Field Key:

This key indicates assigned port number values:

Dec                       Port Numbers

0                                            Reserved
1-32767                 Internet registered ("well-known") protocols
32768-98303         Reserved, to allow TCPv7-TCPv4 conversion
98304 & up            Dynamic assignment

 

Data value (decimal): 21 (indicates FTP)

 

Data values in other bases:

 

Hexadecimal

0

0

1

5

Binary

0000

0000

0001

0101

Decimal

0

21

ASCII

©

©

 

Source: http://www.zvon.org/tmRFC/RFC1475/Output/chapter4.html

 

Programming Hint: The name for this variable in code will be IP_TCP_DestinationPort_FTP.

IP > TCP PDU > Sequence Number for the selected FTP PDU

 

Field Name:  Sequence Number

 

Purpose and Definition:
TCP is responsible for ensuring that all IP packets sent are actually received. When an application's data is packaged into IP packets, TCP will give each IP packet a sequence number. Once all the packets have arrived at the receiving computer, TCP uses the number in this 32-bit field to ensure that all of the packets actually arrived and are in the correct sequence.

 

Field Key:  Not applicable

 

Data value (decimal): 2175080044

 

Data values in other bases:

 

Hexadecimal

8

1

A

5

1

6

6

C

Binary

1000

0001

1010

0101

0001

0110

0110

1100

Decimal

0

60

176

60

ASCII

©

‘

á

‘

 

Programming Hint: The name for this variable in code will be IP_TCP_SequenceNumber_FTP.

IP > TCP PDU > Acknowledgement Number for the selected FTP PDU

 

Field Name: Acknowledgement Number

Purpose and Definition:
This number is used by the receiving computer to acknowledge which packets have successfully arrived. This number will be the sequence number of the next packet the receiver is ready to receive.

Field Key:  Not applicable

 

Data value: 2275627869

 

Data values in other bases:

 

Hexadecimal

8

7

A

3

5

3

5

D

Binary

1000

0111

1010

0011

0101

0011

0101

1101

Decimal

135

163

83

93

ASCII

á

á

S

]

 

Programming Hint: The name for this variable in code will be IP_TCP_AcknowledgementNumber_FTP.

IP > TCP PDU > Header Length or Offset for the selected FTP PDU

 

Field Name:  Header Length or Offset

 

Purpose and Definition:
This is identical in concept to the header length in an IP packet, except this time it indicates the length of the TCP header.

 

Field Key:  Not applicable

Data value (bytes): 32

Data values in other bases:

 

Hexadecimal

8

0

Binary

1000

0000

Decimal

128

ASCII

á

 

Programming Hint: The name for this variable in code will be IP_TCP_HeaderLength_FTP.

IP > TCP PDU > Reserved for the selected FTP PDU

 

Field Name:  Reserved

 

Purpose and Definition:
These 6 bits are unused and are always set to 0.

 

Field Key:  Not applicable

 

Data value (binary): 0000 00

 

Data values in other bases:

 

Hexadecimal

0

0

0

0

0

0

Binary

0000

0000

0000

0000

0000

0000

Decimal

0

0

0

ASCII

©

©

©

 

Programming Hint: The name for this variable in code will be IP_TCP_Reserved_FTP.

IP > TCP PDU > Control Flags for the selected FTP PDU

 

Field Name:  Control Flags

 

Purpose and Definition:
Every TCP packet contains this 6-bit value that indicates how many octets it can receive at once. When IP packets are received, they are placed in a temporary area of RAM known as a buffer until the receiving computer has a chance to process them; this value represents how big a buffer the receiving host has made available for this temporary storage of IP packets.

 

Field Key:

 

Data value (binary): 01 1000

 

Data values in other bases:  Not applicable

 

Programming Hint: The name for this variable in code will be IP_TCP_ControlFlags_FTP.

 

 

IP > TCP PDU > Window Size for the selected FTP PDU

 

Field Name:  Window Size

Purpose and Definition:
Every TCP packet contains this 16-bit value that indicates how many octets it can receive at once. When IP packets are received, they are placed in a temporary area of RAM known as a buffer until the receiving computer has a chance to process them; this value represents how big a buffer the receiving host has made available for this temporary storage of IP packets.

 

Field Key:  Not applicable

 

Data value (decimal): 5840

 

Data values in other bases:

 

Hexadecimal

1

6

D

0

Binary

0001

0110

1110

0000

Decimal

22

224

ASCII

©

á

 

Programming Hint: The name for this variable in code will be IP_TCP_WindowSize_FTP.

IP > TCP PDU > Checksum for the selected FTP PDU

 

Field Name:  Checksum

 

Purpose and Definition:
Unlike IP, TCP is responsible for ensuring that the entire IP packet arrived intact. TCP will run a CRC on the entire IP packet (not just the header) and place the resulting checksum in this field. When the IP packet is received, TCP re-runs the CRC on the entire packet to ensure the checksum is the same.

 

Field Key:  Not applicable

 

Data value (hexadecimal): 11 F4

 

Data values in other bases:

 

Hexadecimal

1

1

F

4

Binary

0001

0001

1111

0100

Decimal

17

244

ASCII

©

©

 

Programming Hint: The name for this variable in code will be IP_TCP_Checksum_FTP.

IP > TCP PDU > Urgent Pointer for the selected FTP PDU

Field Name: Urgent Pointer

Purpose and Definition:
If the Urgent flag is set to on, this value indicates where the urgent data is located.

Information Key:  Not applicable

 

Data value:  Not applicable

 

Data values in other bases:  Not applicable

 

Programming Hint: The name for this variable in code will be IP_TCP_UrgentPointer_FTP.

 

 

IP > TCP PDU > Options and Padding for the selected FTP PDU

 

Field Name: Options and Padding

 

Purpose and Definition:
Like IP options, this field is optional and represents additional instructions not covered in the other TCP fields. Again, if an option does not fill up a 32-bit word, it will be filled in with padding bits.

 

Field Key:  Not applicable

 

Data value (hexadecimal): 01 01 08 0A 1B 25 F3 A1 0B DD 73 58

 

Data values in other bases:

 

Hexadecimal

0

1

0

1

0

8

0

A

1

B

Binary

0000

0001

0000

0001

0000

1000

0000

1010

0001

1011

Decimal

1

1

8

10

27

ASCII

©

©

©

©

©

 

 

Hexadecimal

2

5

F

3

A

1

0

B

D

D

Binary

0010

0101

1111

0011

1010

0001

0000

1011

1101

1101

Decimal

37

243

161

11

221

ASCII

%

á

á

©

á

 

Hexadecimal

7

3

5

8

Binary

0101

0011

0101

1000

Decimal

115

96

ASCII

á

á

 

Programming Hint: The name for this variable in code will be IP_TCP_OptionsPadding_FTP.
2.2.3 FTP PDU for the selected FTP PDU

 

IP >TCP > FTP Header for the FTP Packet

 

RFC Link:  http://www.ietf.org/rfc/rfc0959.txt?number=959

 

PASS (Password)

            The argument field is a Telnet string specifying the user’s password.  This command must be immediately preceded by the user name command, and, for some sites, completes the user’s identification for access control.

 

What is Contained in the Packet

Request:           PASS

Request Arg:    f1a2k3user

 

Data Values (hexadecimal): 50 41 53 53 20 66 31 61 32 6B 33 75 73 65 72 0D 0A

 

Data Values in Other Bases:

 

ASCII

P

A

S

S

SPC

f

1

a

2

Hexadecimal

5  0

4  1

5  3

5  3

2  0

6  6

3  1

6  1

3  2

Binary

0101 0000

0100 0001

0101 0011

0101 0011

0010 0000

0110 0110

0011 0001

0110 0001

0011 0010

Decimal

80

65

83

83

32

102

49

97

59

 

ASCII

k

3

u

s

e

r

\r

\n

Hexadecimal

6 B

3 3

7 5

7 3

6 5

7 2

0 D

0 A

Binary

0110 1011

0011 0011

0111 0101

0111 0011

0110 0101

0111 0010

0000 1101

0000 1010

Decimal

107

51

117

115

101

114

13

10

 

Programming Hint: The name for this variable in code will be IP_TCP_FTP_PDU_FTP.
2.2.4 IP PDU for the selected ICMP PDU

 

IP PDU > Version for the selected ICMP PDU

 

Field Name: Version

 

Purpose and Definition:  Version is a 4-bit field that indicates the format of the internet header.

 

Field Key:       4 = IPv4

            6 = IPv6

 

Data value (decimal):  4

 

Data values in other bases:

 

Hexadecimal

4

Binary

0100

Decimal

4

 

Programming Hint: The name for this variable in code will be IP_Version_ICMP.

IP PDU > Internet Header Length for the selected ICMP PDU

 

Field Name:  Internet Header Length

 

Purpose and Definition:  The IHL field is a 4 bit field indicating the length of the internet header in 32 bit words, and thus points to the beginning of the data.  The minimum value of a correct header is 5.

 

Field Key:  Not applicable

 

Data value:  The value contained in our field is 20 bytes.  This is the hexadecimal and decimal value of 5 multiplied by 4 bits.

 

Data values in other bases:

 

Hexadecimal

0

5

Binary

0000

0101

Decimal

5

 

Programming Hint: The name for this variable in code will be IP_Version_ICMP.

IP PDU > Type of Service for the selected ICMP PDU

 

Field Name:  Type of Service

 

Purpose and Definition:  Type of Service is an 8-bit field that provides and indication of the abstract parameters of the quality of service desired.  These parameters guide the selection of the actual service parameters when transmitting a datagram through a particular network.

 

Field Key:  The major choice is a three-way tradeoff between low-delay, high-reliability, and high-throughput.

 

 

 

 


Bits 0-2: Precedence

Bit 3: (D)  0 = Normal Delay                1 = Low Delay

Bit 4: (T)  0 = Normal Throughput        1 = High Throughput

Bit 5: (R)  0 = Normal Reliability           1 = High Reliability

 

Precedence:

            111 = Network Control                        011 = Flash

            110 = Internetwork Control                  010 = Immediate

            101 = CRITIC/ECP                             001 = Priority

            100 = Flash Overrided             000 = Routine

 

Data value (hexadecimal): 00

 

Data values in other bases:

 

Hexadecimal

0

0

Binary

0000

0000

Decimal

0

 

Programming Hint: The name for this variable in code will be IP_TypeOfService_ICMP.

 

IP PDU > Total Length of Ethernet Frame for the selected ICMP PDU

 

Field Name: Total Length of Ethernet Frame

 

Purpose and Definition: Total Length is a 16-bit field that indicates the length of the frame, measured in octets, including internet header and data.  The maximum size is 216-1 or 65,535 octets; however, the recommended maximum size is 576 octets.

 

Field Key: Not applicable

 

Data values (decimal):  84

 

Data values in other bases:

 

Hexadecimal

0

0

5

4

Binary

0000

0000

0101

0100

Decimal

0

84

ASCII

©

T

 

Programming Hint: The name for this variable in code will be IP_TotalLength_ICMP.

IP PDU > Identification for the selected ICMP PDU

 

Field Name:  Identification

 

Purpose and Definition:  Identification is a 16-bit field.  An identifying value is assigned by the sender to aid in assembling the fragments of a datagram.  The identifier is chosen based on the need to provide a way to uniquely identify the fragments and protocol for the time the datagram or any fragment could be alive in the internet

 

Field Key: Not applicable

 

Data value (hexadecimal): 00 00

 

Data values in other bases:

 

Hexadecimal

0

0

0

0

Binary

0000

0000

0000

0000

 

Programming Hint: The name for this variable in code will be IP_Identification_ICMP.

IP PDU > Flags for the selected ICMP PDU

 

Field Name:  Flags

 

Purpose and Definition:  Flags is a 3-bit field that indicates directions for fragmentation.

 

Field Key:

Bit 0: reserved, must be 0

Bit 1: (DF)  0 = May Fragment             1 = Don’t Fragment

Bit 2: (MF) 0 = Last Fragment              1 = More Fragment

 

Data value (binary): 010

 

Data values in other bases:  Not applicable

 

Programming Hint: The name for this variable in code will be IP_Flags_ICMP.

 

 

IP PDU > Fragment Offset for the selected ICMP PDU

 

Field Name:  Fragment Offset

 

Purpose and Definition:  The Fragment Offset is a 13- bit field indicating where in the Ethernet frame this fragment begins.  The Fragment Offset is measured in units of 8 octets, and the first fragment has offset 0.

 

Field Key:  Not applicable

 

Data value (decimal): 0

 

Data values in other bases:

Binary: 0000 0000 0000

 

Programming Hint: The name for this variable in code will be IP_FragmentOffset_ICMP.

IP PDU > Time to Live for the selected ICMP PDU

 

Field Name: Time to Live

 

Purpose and Definition:  Time to Live is an 8-bit field that indicates the maximum time the datagram is allowed to remain in the internet.  If this field contains the value 0, then the datagram must be destroyed.  This field is modified in internet header processing.  The time is measure in units of seconds, and is set by the sender to the maximum time the datagram is allowed to be in the internet.  This field is decreased at each point that the internet header is processed.  The intention is to cause undeliverable packets to be discarded, and to bind the maximum datagram lifetime.

 

Field Key:  Not applicable

 

Data value (decimal): 64

 

Data values in other bases:

 

Hexadecimal

4

0

Binary

0100

0000

Decimal

64

 

Programming Hint: The name for this variable in code will be IP_TimeToLive_ICMP.
IP PDU > Protocol for the selected ICMP PDU

 

Field Name:  Protocol

 

Purpose and Definition:  Protocol is an 8-bit field that indicates the next level protocol that is used in the data portion of the internet diagram.

 

Field Key:

Dec Hex         Protocol                                                          Dec                 Hex       Protocol

0            00      Reserved                                                          22                    16           Multiplexing

1            01      ICMP                                                              23                    17           DCN

2            02      Unassigned                                                       24                    18           TAC Monitoring       

3            03      Gateway-to-Gateway                                       25-76               19-4C     Unassigned               

4            04      CMCC Gateway Monitoring Message  77                    4D          Any local network

5            05      ST                                                                    100                  64           SATNET and Backroom EXPAK

6            06      TCP                                                                 101                  65           MIT Subnet Support

7            07      UCL                                                                102-104           66-68      Unassigned

10          0A     Unassigned                                                       105                  69           SATNET Monitoring

11          0B      Secure                                                              106                  6A          Unassigned

12          0C     BBN RCC Monitoring                          107                  6B           Internet Packet Core Utility

13          0D     NVP                                                                110-113           6E-71     Unassigned

14          0E      PUP                                                                 114                  72           Backroom SATNET Monitoring

15          0F      Pluribus                                                            115                  73           Unassigned

16        10       Telnet                                                               116                  74           WIDEBAND Monitoring

17        11       XNET                                                              117                  75           WIDEBAND EXPAK

20        14       Chaos                                                              120-376           78-0178  Unassigned

21        15       User Datagram                                     377                  0179        Reserved

 

Data value (hexadecimal): 01

 

Data values in other bases:

 

Hexadecimal

0

6

Binary

0000

0001

Decimal

1

 

RFC Link: http://www.faqs.org/rfcs/rfc790.html

 

Programming Hint: The name for this variable in code will be IP_Protocol_ICMP.

IP PDU > Header Checksum for the Selected ICMP PDU

 

Field Name:  Header Checksum

 

Purpose and Definition:  The Header Checksum is a 16-bit field.  This CRC algorithm is the 16-bit one’s complement sum of all the 16-bit words in the header.  For purposes of computing the checksum, the value of the checksum field is initially zero.  When both header checksums are the same, then the header bits are correct.  If either checksums vary, then a packet will need to be resent.

 

This is a simple way to compute the checksum and experimental evidence indicates that it is adequate, but it is provisional and may be replaced by a CRC procedure, depending on further experience.

 

Field Key:  Not applicable

 

Data value (hexadecimal): B8 CC

 

Data values in other bases:

 

Hexadecimal

B

8

C

C

Binary

1011

1000

1100

1100

 

Programming Hint: The name for this variable in code will be IP_HeaderChecksum_ICMP.

IP PDU > Source Address for the Selected ICMP PDU

 

Field Name:  Source Address

 

Purpose and Definition:  The Source Address is a 32-bit field that contains the IP address of the host that sent the IP Packet.

 

Field Key:  Not applicable

 

Data value:  192.168.0.39

 

Data values in other bases:

 

Hexadecimal

C

0

A

8

0

0

2

7

Binary

1100

0000

1010

1000

0000

0000

0010

0111

Decimal

192

168

0

39

 

Programming Hint: The name for this variable in code will be IP_SourceAddress_ICMP.

IP PDU > Destination Address for the selected ICMP PDU

 

Field Name:  Destination Address

 

Purpose and Definition:  The Destination Address is a 32-bit field that contains the address of the host that is to receive the data contained within the IP packet.

 

Field Key:  Not applicable

 

Data value:  192.168.0.101

 

Data values in other bases:

 

Hexadecimal

C

0

A

8

0

0

6

5

Binary

1100

0000

1010

1000

0000

0000

0110

0101

Decimal

192.

168.

0.

101

 

Programming Hint: The name for this variable in code will be IP_DestinationAddress_ICMP.

 

IP PDU > Options and Padding for the selected ICMP PDU

 

Field Name:  Options and Padding

 

Purpose and Definition:  The options may or may not appear in Ethernet packets.  They must be implemented by all IP modules (host and gateways).  What is optional is their transmission in any particular packet, not their implementation.

 

The option field is variable in length.  There may be zero or more options.  There are two cases for the format of an option.

            Case 1: A single octet of option type

            Case 2: An option-type octet, an option-length octet, and the actual option-data                                    octets.

 

Field Key:  Not applicable

 

Data values:  Not applicable

 

Data values in other bases:  Not applicable

 

Programming Hint: The name for this variable in code will be IP_OptionsPadding_ICMP.

 

 

 

2.2.5 ICMP PDU for the selected ICMP PDU

 

IP > ICMP Header > Type for the selected ICMP PDU

 

Field Name:  Type

 

Purpose and Definition:  The type is an 8-bit field that identifies what sort of message the ICMP protocol is sending.

 

Field Key:

Dec     Hex    Message Type                       Dec       Hex      Message Type       

0          00        Echo Reply                               16          10        Information Reply

1          01        Unassigned                               17          11         Address Mask Request

2          02        Unassigned                               18          12         Address Mask Reply

3          03        Destination Unreachable           19          13         Reserved (for Security)

4          04        Source Quench             20-29     14-1D   Reserved (for Robustness Experiment)

5          05        Redirect                                   30          1E         Traceroute

6          06        Alternate Host Address            31          1F         Datagram Conversion Error

7          07        Unassigned                               32          20         Mobile Host Redirect

8          08        Echo                                        33          21         IPv6 Where-Are-You

9          09        Router Advertisement               34          22         IPv6 I-Am-Here

10        0A       Router Solicitation                    35          23         Mobile Registration Request

11        0B        Time Exceeded             36          24         Mobile Registration Reply

12        0C       Parameter Problem                   37          25         Domain Name Request

13        0D       Timestamp                                38          26         Domain Name Reply

14        0E        Timestamp Reply                      39          27         SKIP

15        0F        Information Request                  40          28         Photuris

                                                                        41-255   29-FF Reserved

 

Data value: 8 (Echo (ping) Request)

 

Data values in other bases:

 

Hexadecimal

0

8

Binary

0000

1000

Decimal

8

 

RFC Link: http://www.iana.org/assignments/icmp-parameters

 

Programming Hint: The name for this variable in code will be IP_ICMP_Type_ICMP.

 

IP > ICMP Header > Code for the selected ICMP PDU

 

Field Name:  Code

 

Purpose and Definition: Code is an 8-bit field that provides further information about the associated type field.

Field Key:

Type     Name                                                                                                  Type     Name
  0             Echo Reply (used by “PING”)                                                       7            Unassigned 
                     0     No Code                                                                                 8            Echo (used by "PING")
  1             Unassigned                                                                                        0     No Code                                                                           
  2             Unassigned                                                                  9            Router Advertisement 
  3             Destination Unreachable                                                                                    0    No Code
                     0     Net Unreachable                                              10           Router Selection
                     1     Host Unreachable                                                                   0    No Code
                     2     Protocol Unreachable                                                          11           Time Exceeded
                     3     Port Unreachable                                                                    0    Time to Live exceeded in Transit
4         Fragmentation needed and                                                                1    Fragment Reassembly Time Exceeded
                Don't Fragment was Set                                              12            Parameter Problem
                     5     Source Route Failed                                                                                    0    Pointer indicates the error
                     6     Destination Network Unknown                                                                1    Missing a Required Option
                     7     Destination Host Unknown                                                  2    Bad Length
                     8     Source Host Isolated                                                           13           Timestamp
9         Communication with Destination                                                     0    No Code
         Network is Administratively Prohibited                  14           Timestamp Reply                   
10      Communication with Destination                                                     0    No Code
         Host is Administratively Prohibited                         15           Information Request             
11      Destination Network Unreachable                                                   0    No Code
         for Type of Service                                               16           Information Reply                    
12      Destination Host Unreachable for                                                    0    No Code
         Type of Service                                                           17           Address Mask Request       
  4            Source Quench                                                                                                        0    No Code
                     0     No Code                                                                                18           Address Mask Reply            
  5            Redirect                                                                                                                   0     No Code
                     0    Redirect Datagram for the Network                                    19           Reserved (for Security)        
                     1    Redirect Datagram for the Host                                          20-29   Reserved (for Robustness Experiment)
                     2    Redirect Datagram for the Type of                                     30        Traceroute
                             Service and Network                                                          31        Datagram Conversion Error
3         Redirect Datagram for the Type of                            32        Mobile Host Redirect
         Service and Host                                                         33        IPv6 Where-Are-You
  6            Alternate Host Address                                             34        IPv6 I-Am-Here
                     0    Alternate Address for Host                            35        Mobile Registration Request 
36        Mobile Registration Reply
       Data value (decimal): 0

 

Data values in other bases:

 

Hexadecimal

0

0

Binary

0000

0000

Decimal

0

ASCII

©

 

Programming Hint: The name for this variable in code will be IP_ICMP_Header_ICMP.

IP > ICMP Header > Checksum for the selected ICMP PDU

 

Field Name:  Checksum

 

Purpose and Definition:  The checksum is the 16-bit one’s complement of the one’s complement sum of the ICMP message, starting with the ICMP type.  For computing the checksum, the checksum field should initially be zero.

 

Field Key:  Not applicable

 

Data value (hexadecimal): C9 15

 

Data values in other bases:

 

Hexadecimal

C

9

1

5

Binary

1100

1001

0001

0101

Decimal

201

21

ASCII

á

©

 

Programming Hint: The name for this variable in code will be IP_ICMP_Checksum_ICMP.

 

IP > ICMP Header > Identifier for the selected ICMP PDU

 

Field Name:  Identifier

 

Purpose and Definition:  The identifier is a 16-bit field that is used in matching echoes and replies for when the code field is zero.

 

Field Key:  Not applicable

 

Data value (hexadecimal): 70 60

 

Data values in other bases:

 

Hexadecimal

7

0

6

0

Binary

0111

0000

0110

0000

Decimal

112

96

ASCII

P

‘

 

Programming Hint: The name for this variable in code will be IP_ICMP_Identifier_ICMP.

 

IP > ICMP Header > Sequence for the selected ICMP PDU

 

Field Name:  Sequence

 

Purpose and Definition:  The sequence is a 16-bit field that is used in matching echoes and replies for when the code field is zero.

 

Field Key:  Not applicable

 

Data value (hexadecimal): 70 60

 

Data values in other bases:

 

Hexadecimal

0

0

0

0

Binary

0000

0000

0000

0000

Decimal

0

0

ASCII

©

©

 

Programming Hint: The name for this variable in code will be IP_ICMP_Sequence_ICMP

 

IP > ICMP Header > Data for the selected ICMP PDU

 

Field Name:  Data

 

Purpose and Definition:  The data is a variable-length field that contains the actual information that is sent in the ping packet.

 

Field Key:  Not applicable

 

Data value (hexadecimal): 42 B1 89 3F 00 00 00 00 2C C6 07 00 00 00 00 00 10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F 20 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F 30 31 32 33 34 35 36 37

 

Data values in other bases:

 

Hexadecimal

4

2

B

1

8

9

3

F

0

0

Binary

0100

0010

1011

0001

1000

1001

0011

1111

0000

0000

Decimal

66

177

137

63

0

ASCII

B

á

á

?

©

 

Hexadecimal

0

0

0

0

0

0

2

C

C

6

Binary

0000

0000

0000

0000

0000

0000

0010

1100

1100

0110

Decimal

0

0

0

44

198

ASCII

©

©

©

,

á

 

Hexadecimal

0

7

0

0

0

0

0

0

0

0

Binary

0000

0111

0000

0000

0000

0000

0000

0000

0000

0000

Decimal

7

0

0

0

0

ASCII

©

©

©

©

©

 

Hexadecimal

0

0

1

0

1

1

1

2

1

3

Binary

0000

0000

0001

0000

0001

0001

0001

0010

0001

0011

Decimal

0

16

17

18

19

ASCII

©

©

©

©

©

 

Hexadecimal

1

4

1

5

1

6

1

7

1

8

Binary

0001

0100

0001

0101

0001

0110

0001

0111

0001

1000

Decimal

20

21

22

23

24

ASCII

©

©

©

©

©

 

Hexadecimal

1

9

1

A

1

B

1

C

1

D

Binary

0001

1001

0001

1010

0001

1011

0001

1100

0001

1101

Decimal

25

26

27

28

29

ASCII

©

©

©

©

©

 

Hexadecimal

1

E

1

F

2

0

2

1

2

2

Binary

0001

1110

0001

1111

0010

0000

0010

0001

0010

0010

Decimal

30

31

32

33

34

ASCII

©

©

SPACE

!

“

 

Hexadecimal

2

3

2

4

2

5

2

6

2

7

Binary

0010

0011

0010

0100

0010

0101

0010

0110

0010

0111

Decimal

35

36

37

38

39

ASCII

#

$

%

&

‘

 

Hexadecimal

2

8

2

9

2

A

2

B

2

C

Binary

0010

1000

0010

1001

0010

1010

0010

1011

0010

1100

Decimal

40

41

42

43

44

ASCII

(

)

*

+

,

 

Hexadecimal

2

D

2

E

2

F

3

0

3

1

Binary

0010

1101

0010

1110

00010

1111

0011

0000

0011

0001

Decimal

45

46

47

48

49

ASCII

-

.

/

0

1

 

Hexadecimal

3

2

3

3

3

4

3

5

3

6

Binary

0011

0010

0011

0011

0011

0100

0011

0101

0011

0110

Decimal

50

51

52

53

54

ASCII

2

3

4

5

6

 

Hexadecimal

3

7

Binary

0011

0111

Decimal

55

ASCII

7

 

 Programming Hint: The name for this variable in code will be IP_ICMP_Data_ICMP.

2.2.6 IP PDU for the selected SMTP PDU

 

IP PDU > IP Version for the selected SMTP PDU

 

Field Name: IP Version

 

Purpose and Definition:  Version is a 4-bit field that indicates the format of the internet header.

 

Field Key:       4 = IPv4

            6 = IPv6

 

Data value (decimal):  4

 

Data values in other bases:

 

Hexadecimal

4

Binary

0100

Decimal

4

 

Programming Hint: The name for this variable in code will be IP_IPVersion_SMTP.


IP PDU > Internet Header Length for the selected SMTP PDU

 

Field Name:  Internet Header Length

 

Purpose and Definition:  The IHL field is a 4-bit field indicating the length of the internet header in 32 bit words, and thus points to the beginning of the data.  The minimum value of a correct header is 5.

 

Field Key:  Not applicable

 

Data value:  The value contained in our field is 20 bytes.  This is the hexadecimal and decimal value of 5 multiplied by 4 bits.

 

Data values in other bases:

 

Hexadecimal

0

5

Binary

0000

0101

Decimal

5

 

Programming Hint: The name for this variable in code will be IP_IHL_SMTP.

IP PDU > Type of Service for the selected SMTP PDU

 

Field Name:  Type of Service

 

Purpose and Definition:  Type of Service is an 8-bit field that provides and indication of the abstract parameters of the quality of service desired.  These parameters guide the selection of the actual service parameters when transmitting a datagram through a particular network.

 

Field Key:  The major choice is a three-way tradeoff between low-delay, high-reliability, and high-throughput.

 

 

 

 


Bits 0-2: Precedence

Bit 3: (D)  0 = Normal Delay                1 = Low Delay

Bit 4: (T)  0 = Normal Throughput        1 = High Throughput

Bit 5: (R)  0 = Normal Reliability           1 = High Reliability

 

Precedence:

            111 = Network Control                        011 = Flash

            110 = Internetwork Control                  010 = Immediate

            101 = CRITIC/ECP                             001 = Priority

            100 = Flash Overrided             000 = Routine

 

Data value (hexadecimal): 00

 

Data values in other bases:

 

Hexadecimal

0

0

Binary

0000

0000

Decimal

00

 

Programming Hint: The name for this variable in code will be IP_TypeOfService_SMTP.

IP PDU > Total Length of Ethernet Frame for the selected SMTP PDU

 

Field Name: Total Length of Ethernet Frame

 

Purpose and Definition: Total Length is a 16-bit field that indicates the length of the frame, measured in octets, including internet header and data.  The maximum size is 216-1 or 65,535 octets; however, the recommended maximum size is 576 octets.

 

Field Key:  Not applicable

 

Data values (hexadecimal):  02 12

 

Data values in other bases:

 

Hexadecimal

0

2

1

2

Binary

0000

0010

0001

0010

Decimal

2

18

ASCII

©

©

 

Programming Hint: The name for this variable in code will be IP_TotalLength_SMTP.

IP PDU > Identification for the selected SMTP PDU

 

Field Name:  Identification

 

Purpose and Definition:  Identification is a 16-bit field.  An identifying value is assigned by the sender to aid in assembling the fragments of a datagram.  The identifier is chosen based on the need to provide a way to uniquely identify the fragments and protocol for the time the datagram or any fragment could be alive in the internet.

 

Field Key:  Not applicable

 

Data value (hexadecimal): 6128

 

Data values in other bases:

 

Hexadecimal

6

1

2

8

Binary

0110

0001

0010

1000

 

Programming Hint: The name for this variable in code will be IP_Idenfification_SMTP.

IP PDU > Flags for the selected SMTP PDU

 

Field Name:  Flags

 

Purpose and Definition:  Flags is a 3-bit field that indicates directions for fragmentation.

 

Field Key:

Bit 0: reserved, must be 0

Bit 1: (DF)  0 = May Fragment             1 = Don’t Fragment

Bit 2: (MF) 0 = Last Fragment              1 = More Fragment

 

Data value (binary): 0100

 

Data values in other bases:  Not applicable

 

Programming Hint: The name for this variable in code will be IP_Flags_SMTP.

 

IP PDU > Fragment Offset for the selected SMTP PDU

 

Field Name:  Fragment Offset

 

Purpose and Definition:  The Fragment Offset is a 13- bit field indicating where in the Ethernet frame this fragment begins.  The Fragment Offset is measured in units of 8 octets, and the first fragment has offset 0.

 

Field Key:  Not applicable

 

Data value (decimal): 0

 

Data values in other bases:

Binary: 0000 0000 0000

 

Programming Hint: The name for this variable in code will be IP_FragmentOffset_SMTP.

IP PDU > Time to Live for the selected SMTP PDU

 

Field Name: Time to Live

 

Purpose and Definition:  Time to Live is an 8-bit field that indicates the maximum time the datagram is allowed to remain in the internet.  If this field contains the value 0, then the datagram must be destroyed.  This field is modified in internet header processing.  The time is measure in units of seconds, and is set by the sender to the maximum time the datagram is allowed to be in the internet.  This field is decreased at each point that the internet header is processed.  The intention is to cause undeliverable packets to be discarded, and to bind the maximum datagram lifetime.

 

Field Key:  Not applicable

 

Data value (decimal): 64

 

Data values in other bases:

 

Hexadecimal

4

0

Binary

0100

0000

Decimal

64

 

Programming Hint: The name for this variable in code will be IP_TimeToLive_SMTP.

IP PDU > Protocol for the selected SMTP PDU

 

Field Name:  Protocol

 

Purpose and Definition:  Protocol is an 8-bit field that indicates the next level protocol that is used in the data portion of the internet diagram.

 

Field Key:

Dec Hex         Protocol                                                          Dec                 Hex       Protocol

0            00      Reserved                                                          22                    16          Multiplexing

1            01      ICMP                                                              23                    17          DCN

2            02      Unassigned                                                       24                    18           TAC Monitoring       

3            03      Gateway-to-Gateway                                       25-76               19-4C     Unassigned               

4            04      CMCC Gateway Monitoring Message  77                    4D          Any local network

5            05      ST                                                                    100                  64          SATNET and Backroom EXPAK

6            06      TCP                                                                 101                  65          MIT Subnet Support

7            07      UCL                                                                102-104           66-68     Unassigned

10          0A     Unassigned                                                       105                  69           SATNET Monitoring

11          0B      Secure                                                              106                  6A         Unassigned

12          0C     BBN RCC Monitoring                          107                  6B          Internet Packet Core Utility

13          0D     NVP                                                                110-113           6E-71    Unassigned

14          0E      PUP                                                                 114                  72           Backroom SATNET Monitoring

15          0F      Pluribus                                                            115                  73           Unassigned

16        10        Telnet                                                               116                  74           WIDEBAND Monitoring

17        11        XNET                                                              117                  75          WIDEBAND EXPAK

20        14        Chaos                                                              120-376           78-0178  Unassigned

21        15        User Datagram                                     377                  0179        Reserved

 

Data value (hexadecimal): 06

 

Data values in other bases:

 

Hexadecimal

0

6

Binary

0000

0110

Decimal

6

 

RFC Link: http://www.faqs.org/rfcs/rfc790.html

 

Programming Hint: The name for this variable in code will be IP_Protocol_SMTP.

IP PDU > Header Checksum for the selected SMTP PDU

 

Field Name:  Header Checksum

 

Purpose and Definition:  The Header Checksum is a 16-bit field.  The Checksum is the 16-bit one’s complement sum of all 16-bit words in the header.  For purposes of computing the checksum, the initial value of its field is zero.  When both header checksums are equal, then the header bits are correct.  If either checksums vary, then a new, correct packet will need to be sent.

 

This is a simple way to compute the checksum and experimental evidence indicates that it is adequate, but it is provisional and may be replaced by a CRC procedure, depending on further experience.

 

Field Key:  Not applicable

 

Data value (hexadecimal): F1 F3

 

Data values in other bases:

 

Hexadecimal

F

1

F

3

Binary

1111

0001

1111

0011

 

Programming Hint: The name for this variable in code will be IP_HeaderChecksum_SMTP.

IP PDU > Source Address for the selected SMTP PDU

 

Field Name:  Source Address

 

Purpose and Definition:  The Source Address is a 32-bit field that contains the IP address of the host that sent the IP Packet.

 

Field Key:  Not applicable

 

Data value (decimal):  192.168.0.101

 

Data values in other bases:

 

Hexadecimal

C

0

A

8

0

1

0

1

Binary

1100

0000

1010

1000

0000

0001

0010

0001

Decimal

192

168

101

 

Programming Hint: The name for this variable in code will be IP_SourceAddress_SMTP.

IP PDU > Destination Address for the selected SMTP PDU

 

Field Name:  Destination Address

 

Purpose and Definition:  The Destination Address is a 32-bit field that contains the address of the host that is to receive the data contained within the IP packet.

 

Field Key: Not applicable

 

Data value (decimal):  192.168.100.20

 

Data values in other bases:

 

Hexadecimal

C

0

A

8

0

0

6

5

Binary

1100

0000

1010

1000

0000

0000

0110

0101

Decimal

192

168

100

20

 

Programming Hint: The name for this variable in code will be IP_DestinationAddress_SMTP.

IP PDU > Options and Padding for the selected SMTP PDU

 

Field Name:  Options and Padding

 

Purpose and Definition:  The options may or may not appear in Ethernet packets.  They must be implemented by all IP modules (host and gateways).  What is optional is their transmission in any particular packet, not their implementation.

 

The option field is variable in length.  There may be zero or more options.  There are two cases for the format of an option.

            Case 1: A single octet of option type

            Case 2: An option-type octet, an option-length octet, and the actual option-data                                    octets.

 

Field Key:  Not applicable

 

Data values:  Not applicable

 

Data values in other bases:  Not applicable

 

Programming Hint: The name for this variable in code will be IP_OptionsPadding_SMTP.

 

 

IP PDU > Data for the selected SMTP PDU

 

Field Name:  Data

 

Purpose and Definition:  The Data is a variable length field which contains the actual data that is being sent from one host to another.  The data field may start with a Layer 4 header, which will give additional instructions to the application that will be receiving the data; alternately, it may be an ICMP header and not contain any user data at all.

 

Field Key:  Not applicable

 

Data values (hexadecimal) :  (TCP) 0D 0A 2D 2D 2D 31 34 36 33 37 38 36 32 34 30 2D 37 32 33 37 38 33 33 32 38 2D 31 30 36 37 36 33 34 33 35 30 3D 3A 32 36 36 30 36 0D 0A 43 6F 6E 74 2D 54 79 70 65 3A 20 54 45 58 54 2F 70 6C 61 69 6E 3B 20 6E 61 6D 65 3D 22 6D 69 6d 65 74 65 73 74 2E 74 78 74 22 0D 0A 43 6F 6E 74 65 6E 74 2D 54 72 61 6E 73 66 65 72 2D 45 6E 63 6F 64 69 6E 67 3A 20 42 41 53 45 36 34 0D 0A 43 6F 6E 74 65 6E 74 2D 49 44 3A 20 3C 50 69 6E 65 2E 4C 4E 58 2E 34 2E 32 31 2E 32 31 2E 30 33 31 31 36 30 35 35 30 30 2E 32 36 36 30 36 40 63 62 31 31 38 6B 73 2E 63 73 2E 73 69 65 6E 61 2E 65 64 75 3E 0D 0A 43 6F 6E 74 65 6E 74 2D 44 65 73 63 72 69 70 74 69 6F 6E 3A 20 0D 0A 43 6F 6E 74 65 6E 74 2D 44 69 73 70 6F 73 69 74 69 6F 6E 3A 20 61 74 74 61 63 68 6D 65 6E 74 3B 20 66 69 6C 65 6E 61 6D 65 3D 22 6D 69 6D 65 74 65 73 74 2E 74 78 74 22 0D 0A 0D 0A 56 47 68 70 63 79 42 70 63 79 42 30 61 47 55 67 62 57 56 7A 63 32 46 6E 5A 53 42 30 61 47 46 30 49 48 64 70 62 47 77 67 59 57 78 73 62 33 63 67 64 58 4D 67 64 47 38 67 5A 47 6C 7A 0D 0A 63 47 78 68 65 53 42 33 61 58 52 6F 49 45 56 30 61 47 56 79 5A 57 46 73 49 41 30 4B 59 53 42 4E 53 55 31 46 49 47 46 30 64 47 46 6A 61 47 31 6C 62 6E 51 57 61 57 35 7A 61 57 52 6C 0D 0A 49 47 46 75 49 46 4E 4E 56 46 41 67 5A 6E 4A 68 62 57 55 75 44 51 6F 3D 0D 0A 2D 2D 2D 31 34 36 33 37 38 36 32 34 30 2D 37 32 33 37 38 33 33 32 38 2D 31 30 36 37 36 33 34 33 35 30 3D 3A 32 36 36 30 36 2D 2D 0D 0A 2E 0D 0A

 

Programming Hint: The name for this variable in code will be IP_Data_SMTP.

 

2.2.7 TCP PDU for the selected SMTP PDU

 

IP > TCP PDU > Source Port for the selected SMTP PDU

 

Field Name:  Source Port

 

Purpose and Definition:

This 16-bit number represents the name of the application that sent the data in the IP packet.

 

Field Key:  Not applicable

 

Data value (decimal): 3651

 

Data values in other bases:

 

Hexadecimal

0

D

E

9

Binary

0000

1101

1110

1001

Decimal

13

233

ASCII

/n

á

 

Programming Hint: The name for this variable in code will be IP_TCP_SourcePort_SMTP.

IP > TCP PDU > Destination Port for the selected SMTP PDU

 

Field Name: Destination Port

 

Purpose and Definition:
This 16-bit number represents the name of the application that is to receive the data contained within the IP packet. This is one of the major differences between a Layer 3 and a Layer 4 header: the Layer 3 header contains the IP address of the computer that is to receive the IP packet; once that packet has been received, the port address in the Layer 4 header ensures that the data contained within that IP packet is passed to the correct application on that computer.

 

Field Key:

This key indicates assigned port number values:

Dec                       Port Numbers

0                                            Reserved
1-32767                 Internet registered ("well-known") protocols
32768-98303         Reserved, to allow TCPv7-TCPv4 conversion
98304 & up            Dynamic assignment

 

Data value (decimal): 25 (indicates SMTP)

 

Data values in other bases:

 

Hexadecimal

0

0

1

9

Binary

0000

0000

0001

1001

Decimal

0

25

ASCII

©

©

 

Source: http://www.zvon.org/tmRFC/RFC1475/Output/chapter4.html

 

Programming Hint: The name for this variable in code will be IP_TCP_DestinationPort_SMTP.

IP > TCP PDU > Sequence Number for the selected SMTP PDU

 

Field Name:  Sequence Number

 

Purpose and Definition:
TCP is responsible for ensuring that all IP packets sent are actually received. When an application's data is packaged into IP packets, TCP will give each IP packet a sequence number. Once all the packets have arrived at the receiving computer, TCP uses the number in this 32-bit field to ensure that all of the packets actually arrived and are in the correct sequence.

 

Field Key:  Not applicable

 

Data value (decimal): 2069207327

 

Data values in other bases:

 

Hexadecimal

7

B

5

5

9

9

1

F

Binary

0111

1011

0101

0101

1001

1001

0001

1111

Decimal

123

85

153

31

ASCII

{

U

á

©

 

Programming Hint: The name for this variable in code will be IP_TCP_SequenceNumber_SMTP.

IP > TCP PDU > Acknowledgement Number for the selected SMTP PDU

 

Field Name: Acknowledgement Number

Purpose and Definition:
This number is used by the receiving computer to acknowledge which packets have successfully arrived. This number will be the sequence number of the next packet the receiver is ready to receive.

Field Key:  Not applicable

 

Data value (decimal): 3827794966

 

Data values in other bases:

 

Hexadecimal

E

4

2

7

8

4

1

6

Binary

1110

0100

0010

0111

1000

0100

0001

0110

Decimal

228

39

132

22

ASCII

á

'

á

©

 

Programming Hint: The name for this variable in code will be IP_TCP_AcknowledgementNumber_SMTP.

IP > TCP PDU > Header Length or Offset for the selected SMTP PDU

 

Field Name:  Header Length or Offset

 

Purpose and Definition:
This is identical in concept to the header length in an IP packet, except this time it indicates the length of the TCP header.

 

Field Key:  Not applicable

Data value (bytes): 32

Data values in other bases:

 

Hexadecimal

8

0

Binary

1000

0000

Decimal

128

ASCII

á

 

Programming Hint: The name for this variable in code will be IP_TCP_HeaderLength_SMTP.

IP > TCP PDU > Reserved for the selected SMTP PDU

 

Field Name:  Reserved

 

Purpose and Definition:
These 6 bits are unused and are always set to 0.

 

Field Key:  Not applicable

 

Data value (binary): 0000 00

 

Data values in other bases:

 

Hexadecimal

0

0

0

0

0

0

Binary

0000

0000

0000

0000

0000

0000

Decimal

0

0

0

ASCII

©

©

©

 

Programming Hint: The name for this variable in code will be IP_TCP_Reserved_SMTP

IP > TCP PDU > Control Flags for the selected SMTP PDU

 

Field Name:  Control Flags

 

Purpose and Definition:
Every TCP packet contains this 6-bit value that indicates how many octets it can receive at once. When IP packets are received, they are placed in a temporary area of RAM known as a buffer until the receiving computer has a chance to process them; this value represents how big a buffer the receiving host has made available for this temporary storage of IP packets.

 

Field Key:

 

Data value (binary): 0001 1000

 

Data values in other bases:  Not applicable

 

Programming Hint: The name for this variable in code will be IP_TCP_ControlFlags_SMTP.

 

 

IP > TCP PDU > Window Size for the selected SMTP PDU

 

Field Name:  Window Size

Purpose and Definition:
Every TCP packet contains this 16-bit value that indicates how many octets it can receive at once. When IP packets are received, they are placed in a temporary area of RAM known as a buffer until the receiving computer has a chance to process them; this value represents how big a buffer the receiving host has made available for this temporary storage of IP packets.

 

Field Key:  Not applicable

 

Data value (decimal): 32120

 

Data values in other bases:

 

Hexadecimal

7

D

7

8

Binary

0111

1101

0111

1000

Decimal

125

120

ASCII

}

x

 

Programming Hint: The name for this variable in code will be IP_TCP_WindowSize_SMTP.

IP > TCP PDU > Checksum for the selected SMTP PDU

 

Field Name:  Checksum

 

Purpose and Definition:
Unlike IP, TCP is responsible for ensuring that the entire IP packet arrived intact. TCP will run a CRC on the entire IP packet (not just the header) and place the resulting checksum in this field. When the IP packet is received, TCP re-runs the CRC on the entire packet to ensure the checksum is the same.

 

Field Key:  Not applicable

 

Data value (hexadecimal): 72 B5

 

Data values in other bases:

 

Hexadecimal

7

2

B

5

Binary

0111

0010

1011

0101

Decimal

114

181

ASCII

r

á

 

Programming Hint: The name for this variable in code will be IP_TCP_Checksum_SMTP.
IP > TCP PDU > Urgent Pointer for the selected SMTP PDU

Field Name: Urgent Pointer

Purpose and Definition:
If the Urgent flag is set to on, this value indicates where the urgent data is located.

Information Key:  Not applicable

 

Data value:  Not applicable

 

Data values in other bases:  Not applicable

 

Programming Hint: The name for this variable in code will be IP_TCP_UrgentPointer_SMTP.

 

IP > TCP PDU > Options and Padding for the selected SMTP PDU

 

Field Name: Options and Padding

 

Purpose and Definition:
Like IP options, this field is optional and represents additional instructions not covered in the other TCP fields. Again, if an option does not fill up a 32-bit word, it will be filled in with padding bits.

 

Field Key:  Not applicable

 

Data value (hexadecimal): 01 01 08 0A 07 AE F6 75 00 21 66 A4

 

Data values in other bases:

 

Hexadecimal

0

1

0

1

0

8

0

A

0

7

Binary

0000

0001

0000

0001

0000

1000

0000

1010

0000

0111

Decimal

1

1

8

10

7

ASCII

©

©

©

©

©

 

 

Hexadecimal

A

E

F

6

7

5

0

0

2

1

Binary

1010

1110

1111

0110

0111

0101

0000

0000

0010

0001

Decimal

174

246

117

0

33

ASCII

á

á

u

©

!

 

Hexadecimal

6

6

A

4

Binary

0101

0011

0101

1000

Decimal

102

164

ASCII

f

á

 

Programming Hint: The name for this variable in code will be IP_TCP_OptionsPadding_SMTP.

 

2.2.8 SMTP PDU for the selected SMTP PDU

 

IP > SMTP Header > Command for the selected SMTP PDU

 

RFC Link:  http://www.ietf.org/rfc/rfc0821.txt?number=821

 

Field Name:  Command

 

Purpose and Definition:  ASCII messages sent between SMTP hosts. 

 

Field Key:

Command

Description

DATA

Begins message composition.

EXPN <string>

Returns names on the specified mail list.

HELO <domain>

Returns identity of mail server.

HELP <command>

Returns information on the specified command.

MAIL FROM <host>

Initiates a mail session from host.

NOOP

Causes no action, except acknowledgement from server.

QUIT

Terminates the mail session.

RCPT TO <user>

Designates who receives mail.

RSET

Resets mail connection.

SAML FROM <host>

Sends mail to user terminal and mailbox.

SEND FROM <host>

Sends mail to user terminal.

SOML FROM <host>

Sends mail to user terminal or mailbox.

TURN

Switches role of receiver and sender.

VRFY <user>

Verifies the identity of a user.

 

Data value: Content_TEXT\Plain;name=”mimetest.txt”

 

Data values in other bases:

 

Hexadecimal

4

3

6

F

6

E

7

4

Binary

0100

0011

0110

1111

0110

1110

0111

0100

Decimal

67

111

110

116

ASCII

C

o

n

t

 

Hexadecimal

6

5

6

E

7

4

2

D

Binary

0110

0101

0110

1110

0111

0100

0010

1101

Decimal

101

110

116

45

ASCII

e

n

t

-

 

Hexadecimal

5

4

4

5

5

8

5

4

Binary

0101

0100

0100

0101

0101

1000

0101

0100

Decimal

84

69

88

84

ASCII

T

E

X

T

Hexadecimal

2

F

5

0

6

C

6

1

Binary

0010

1111

0101

0000

0110

1100

0110

0001

Decimal

47

80

108

97

ASCII

/

P

l

a

 

Hexadecimal

6

9

6

E

3

B

6

9

Binary

0110

1001

0110

1110

0011

1011

0110

1001

Decimal

105

110

59

110

ASCII

i

n

;

n

 

Hexadecimal

6

1

6

D

6

5

3

D

Binary

0110

0001

0110

1101

0110

0101

0011

1101

Decimal

97

109

101

61

ASCII

a

m

e

=

 

Hexadecimal

2

0

6

3

6

8

6

1

Binary

0010

0000

0110

0011

0110

1000

0110

0001

Decimal

32

99

104

97

ASCII

“

M

I

m

 

Hexadecimal

2

2

7

4

6

5

7

3

Binary

0010

0010

0111

0100

0110

0101

0111

0011

Decimal

34

116

101

115

ASCII

e

t

e

s

 

Hexadecimal

7

4

2

E

7

4

7

8

Binary

0111

0100

0010

1110

0111

0100

0111

1000

Decimal

116

46

116

120

ASCII

t

.

t

x

 

Hexadecimal

7

4

2

0

Binary

0111

0100

0010

0000

Decimal

116

32

ASCII

t

“

 

Programming Hint: The name for this variable in code will be IP_SMTP_Command_SMTP.

IP > SMTP Header > Message for the selected SMTP PDU

 

Field Name:  Message

 

Purpose and Definition:  Response messages consist of a response code followed by explanatory text 

 

Field Key:

 

Response Code

Explanatory Text

211

(Response to system status or help request).

214

(Response to help request).

220

Mail service ready.

221

Mail service closing connection.

250

Mail transfer completed.

251

User not local, forward to <path>.

354

Start mail message, end with <CRLF><CRLF>.

421

Mail service unavailable.

450

Mailbox unavailable.

451

Local error in processing command.

452

Insufficient system storage.

500

Unknown command.

501

Bad parameter.

502

Command not implemented.

503

Bad command sequence.

504

Parameter not implemented.

550

Mailbox not found.

551

User not local, try <path>.

552

Storage allocation exceeded.

553

Mailbox name not allowed.

554

Mail transaction failed.

 

Data value: Not applicable.

 

Programming Hint: The name for this variable in code will be IP_SMTP_Command_SMTP.

 

2.2.9 IP PDU for the selected UDP PDU

 

IP PDU > IP Version for the selected UDP PDU

 

Field Name: IP Version

 

Purpose and Definition:  Version is a 4-bit field that indicates the format of the internet header.

 

Field Key:       4 = IPv4

            6 = IPv6

 

Data value (decimal):  4

 

Data values in other bases:

 

Hexadecimal

4

Binary

0100

Decimal

4

 

Programming Hint: The name for this variable in code will be IP_IPVersion_UDP.

 

IP PDU > Internet Header Length for the selected UDP PDU

 

Field Name:  Internet Header Length

 

Purpose and Definition:  The IHL field is a 4-bit field indicating the length of the internet header in 32 bit words, and thus points to the beginning of the data.  The minimum value of a correct header is 5.

 

Field Key:  Not applicable

 

Data value:  The value contained in our field is 20 bytes.  This is the hexadecimal and decimal value of 5 multiplied by 4 bits.

 

Data values in other bases:

 

Hexadecimal

0

5

Binary

0000

0101

Decimal

5

 

Programming Hint: The name for this variable in code will be IP_IHL_UDP.

 

IP PDU > Type of Service for the selected UDP PDU

 

Field Name:  Type of Service

 

Purpose and Definition:  Type of Service is an 8-bit field that provides and indication of the abstract parameters of the quality of service desired.  These parameters guide the selection of the actual service parameters when transmitting a datagram through a particular network.

 

Field Key:  The major choice is a three-way tradeoff between low-delay, high-reliability, and high-throughput.

 

 

 

 


Bits 0-2: Precedence

Bit 3: (D)  0 = Normal Delay                1 = Low Delay

Bit 4: (T)  0 = Normal Throughput        1 = High Throughput

Bit 5: (R)  0 = Normal Reliability           1 = High Reliability

 

Precedence:

            111 = Network Control                        011 = Flash

            110 = Internetwork Control                  010 = Immediate

            101 = CRITIC/ECP                             001 = Priority

            100 = Flash Overrided             000 = Routine

 

Data value (hexadecimal): 10

 

Data values in other bases:

 

Hexadecimal

1

0

Binary

0001

0000

Decimal

16

 

Programming Hint: The name for this variable in code will be IP_TypeOfService_UDP.

IP PDU > Total Length of Ethernet Frame for the selected UDP PDU

 

Field Name: Total Length of Ethernet Frame

 

Purpose and Definition: Total Length is a 16-bit field that indicates the length of the frame, measured in octets, including internet header and data.  The maximum size is 216-1 or 65,535 octets; however, the recommended maximum size is 576 octets.

 

Field Key:  Not applicable

 

Data values (hexadecimal):  128

 

Data values in other bases:

 

Hexadecimal

0

1

2

8

  Binary

0000

0001

0010

1000

  Decimal

1

40

  ASCII                                                                        ­

 

Programming Hint: The name for this variable in code will be IP_TotalLength_UDP.

 

IP PDU > Identification for the selected UDP PDU

 

Field Name:  Identification

 

Purpose and Definition:  Identification is a 16-bit field.  An identifying value is assigned by the sender to aid in assembling the fragments of a datagram.  The identifier is chosen based on the need to provide a way to uniquely identify the fragments and protocol for the time the datagram or any fragment could be alive in the internet.

 

Field Key:  Not applicable

 

Data value (hexadecimal): BBD7

 

Data values in other bases:

 

Hexadecimal

B

B

D

7

Binary

1011

1011

1101

0111

 

Programming Hint: The name for this variable in code will be IP_Idenfification_UDP.

 

IP PDU > Flags for the selected UDP PDU

 

Field Name:  Flags

 

Purpose and Definition:  Flags is a 3-bit field that indicates directions for fragmentation.

 

Field Key:

Bit 0: reserved, must be 0

Bit 1: (DF)  0 = May Fragment             1 = Don’t Fragment

Bit 2: (MF) 0 = Last Fragment              1 = More Fragment

 

Data value (binary): 0000

 

Data values in other bases:  Not applicable

 

Programming Hint: The name for this variable in code will be IP_Flags_UDP.

 

IP PDU > Fragment Offset for the selected UDP PDU

 

Field Name:  Fragment Offset

 

Purpose and Definition:  The Fragment Offset is a 13- bit field indicating where in the Ethernet frame this fragment begins.  The Fragment Offset is measured in units of 8 octets, and the first fragment has offset 0.

 

Field Key:  Not applicable

 

Data value (decimal): 0

 

Data values in other bases:

Binary: 0000 0000

 

Programming Hint: The name for this variable in code will be IP_FragmentOffset_UDP.

 

IP PDU > Time to Live for the selected UDP PDU

 

Field Name: Time to Live

 

Purpose and Definition:  Time to Live is an 8-bit field that indicates the maximum time the datagram is allowed to remain in the internet.  If this field contains the value 0, then the datagram must be destroyed.  This field is modified in internet header processing.  The time is measure in units of seconds, and is set by the sender to the maximum time the datagram is allowed to be in the internet.  This field is decreased at each point that the internet header is processed.  The intention is to cause undeliverable packets to be discarded, and to bind the maximum datagram lifetime.

 

Field Key:  Not applicable

 

Data value (decimal): 64

 

Data values in other bases:

 

Hexadecimal

4

0

Binary

0100

0000

Decimal

64

 

Programming Hint: The name for this variable in code will be IP_TimeToLive_UDP.
IP PDU > Time to Live for the selected UDP PDU

 

Field Name: Time to Live

 

Purpose and Definition:  Time to Live is an 8-bit field that indicates the maximum time the datagram is allowed to remain in the internet.  If this field contains the value 0, then the datagram must be destroyed.  This field is modified in internet header processing.  The time is measure in units of seconds, and is set by the sender to the maximum time the datagram is allowed to be in the internet.  This field is decreased at each point that the internet header is processed.  The intention is to cause undeliverable packets to be discarded, and to bind the maximum datagram lifetime.

 

Field Key:  Not applicable

 

Data value (decimal): 60

 

Data values in other bases:

 

Hexadecimal

4

0

Binary

0100

0000

Decimal

60

 

Programming Hint: The name for this variable in code will be IP_TimeToLive_UDP.

 

IP PDU > Protocol for the selected UDP PDU

 

Field Name:  Protocol

 

Purpose and Definition:  Protocol is an 8-bit field that indicates the next level protocol that is used in the data portion of the internet diagram.

 

Field Key:

Dec Hex         Protocol                                                          Dec                 Hex        Protocol

0            00      Reserved                                                          22                    16           Multiplexing

1            01      ICMP                                                              23                    17           DCN

2            02      Unassigned                                                       24                    18           TAC Monitoring       

3            03      Gateway-to-Gateway                                       25-76               19-4C     Unassigned               

4            04      CMCC Gateway Monitoring Message  77                    4D          Any local network

5            05      ST                                                                    100                  64           SATNET and Backroom EXPAK

6            06      TCP                                                                 101                  65           MIT Subnet Support

7            07      UCL                                                                102-104           66-68      Unassigned

10          0A     Unassigned                                                       105                  69           SATNET Monitoring

11          0B      Secure                                                              106                  6A          Unassigned

12          0C     BBN RCC Monitoring                          107                  6B           Internet Packet Core Utility

13          0D     NVP                                                                110-113           6E-71     Unassigned

14          0E      PUP                                                                 114                  72           Backroom SATNET Monitoring

15          0F      Pluribus                                                            115                  73           Unassigned

16        10       Telnet                                                               116                  74           WIDEBAND Monitoring

17        11       XNET                                                              117                  75           WIDEBAND EXPAK

20        14       Chaos                                                              120-376           78-0178  Unassigned

21        15       User Datagram                                     377                  0179        Reserved

 

Data value (hexadecimal): 11

 

Data values in other bases:

 

Hexadecimal

1

1

Binary

0001

0001

Decimal

17

 

RFC Link: http://www.faqs.org/rfcs/rfc790.html

 

Programming Hint: The name for this variable in code will be IP_Protocol_UDP

 

IP PDU > Header Checksum for the selected UDP PDU

 

Field Name:  Header Checksum

 

Purpose and Definition:  The Header Checksum is a 16-bit field.  The Checksum is the 16-bit one’s complement sum of all 16-bit words in the header.  For purposes of computing the checksum, the initial value of its field is zero.  When both header checksums are equal, then the header bits are correct.  If either checksums vary, then a new, correct packet will need to be sent.

 

This is a simple way to compute the checksum and experimental evidence indicates that it is adequate, but it is provisional and may be replaced by a CRC procedure, depending on further experience.

 

Field Key:  Not applicable

 

Data value (hexadecimal): 3F 47

 

Data values in other bases:

 

Hexadecimal

3

F

4

7

Binary

0011

1111

0100

0111

 

Programming Hint: The name for this variable in code will be IP_HeaderChecksum_UDP.

 

IP PDU > Source Address for the selected UDP PDU

 

Field Name:  Source Address

 

Purpose and Definition:  The Source Address is a 32-bit field that contains the IP address of the host that sent the IP Packet.

 

Field Key:  Not applicable

 

Data value (decimal):  192.168.0.71

 

Data values in other bases:

 

Hexadecimal

C

0

A

8

0

0

4

7

Binary

1100

0000

1010

1000

0000

0000

0100

0111

Decimal

192

168

0

71

 

Programming Hint: The name for this variable in code will be IP_SourceAddress_UDP.

 

 

IP PDU > Destination Address for the selected UDP PDU

 

Field Name:  Destination Address

 

Purpose and Definition:  The Destination Address is a 32-bit field that contains the address of the host that is to receive the data contained within the IP packet.

 

Field Key: Not applicable

 

Data value (decimal):  192.168.0.255

 

Data values in other bases:

 

Hexadecimal

C

0

A

8

0

0

F

F

Binary

1100

0000

1010

1000

0000

0000

1111

1111

Decimal

192

168

0

255

 

Programming Hint: The name for this variable in code will be IP_DestinationAddress_UDP.

 

IP PDU > Options and Padding for the selected UDP PDU

 

Field Name:  Options and Padding

 

Purpose and Definition:  The options may or may not appear in Ethernet packets.  They must be implemented by all IP modules (host and gateways).  What is optional is their transmission in any particular packet, not their implementation.

 

The option field is variable in length.  There may be zero or more options.  There are two cases for the format of an option.

            Case 1: A single octet of option type

            Case 2: An option-type octet, an option-length octet, and the actual option-data                                    octets.

 

Field Key:  Not applicable

 

Data values:  Not applicable

 

Data values in other bases:  Not applicable

 

Programming Hint: The name for this variable in code will be IP_OptionsPadding_UDP.

 

 

 

IP PDU > Data for the selected UDP PDU

 

Field Name:  Data

 

Purpose and Definition:  The Data is a variable length field which contains the actual data that is being sent from one host to another.  The data field may start with a Layer 4 header, which will give additional instructions to the application that will be receiving the data; alternately, it may be an ICMP header and not contain any user data at all.

 

Field Key:  Not applicable

 

Data values (hexadecimal) :  (UDP) FF FF FF FF FF FF 08 00 69 07 9A C5 08 00 45 10

01 28 BB D7 00 00 3C 11 3F 47 C0 A8 00 47 C0 A8 00 FF 02 0D 01 14 E9 DB 18 01 C2 5A 0A FF 13 D0 00 00 00 00 69 6E 64 79 00 00 00 00 7F FF 11 DB 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 7F FF 13 F0 00 00 00 00 7F FF 11 F6 00 00 00 00 00 00 00 00 00 00 00 00 7F FF FF FF 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 09 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 7F FF 17 E3 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 09 00 00 00 10 05 9D D8 00 00 00 00 10 00 DB A8 00 00 00 00 0F B5 B1 74 00 00 00 00 0F AB 01 C8 00 00 00 00 10 05 9D F8 00 00 00 00 0F B5 9D D8 00 00 00 00 10 05 9D FC 00 00 00 00 0F B5 B1 74 00 00 00 00 10 05 9B 18 00 00 00 00 0F AB 02 80 00 00 00 00 00 00 00 00 00 00 00 00 00 00

 

 

Data values in other bases:

ASCII:  (UDP) ­ Extended ASCII

 

Programming Hint: The name for this variable in code will be IP_Data_UDP.

 

IP PDU > Source Port for the selected UDP PDU

 

RFC Link: http://www.ietf.org/rfc/rfc0768.txt?number=768

 

Field Name: Source Port

 

Purpose and Definition:  Source Port is an optional field, when meaningful, it indicates the port of the sending  process,  and may be assumed  to be the port  to which a  reply should  be addressed  in the absence of any other information.  If not used, a value of zero is inserted.

 

Field Key:  Not applicable

 

Data value (decimal): 525

 

Data values in other bases:

 

Hexadecimal

02

0D

Binary

0010

1101

Decimal

525

 

Programming Hint: The name for this variable in code will be IP_SourcePort_UDP.

 

IP PDU > Destination Port for the selected UDP PDU

 

Field Name: Destination Port

 

Purpose and Definition:  Destination Port has a meaning within the context of a particular internet destination address.
 

Field Key:  Not applicable

 

Data value (decimal): 525

 

Data values in other bases:

 

Hexadecimal

02

0D

Binary

0010

1101

Decimal

525

 

Programming Hint: The name for this variable in code will be IP_DestinationPort_UDP.

IP PDU > Length for the selected UDP PDU

Field Name: Length

 

Purpose and Definition:  Length is the length in octets of this user datagram including this header and the data (This means the minimum value of the length is eight).
 

Field Key:  Not applicable

 

Data value (decimal): 276

 

Data values in other bases:

 

Hexadecimal

01

14

Binary

0001

00001 0100

Decimal

276

 

Programming Hint: The name for this variable in code will be IP_Length_UDP.

IP PDU > Checksum for the selected UDP PDU

 

Field Name: Checksum

 

Purpose and Definition:  Checksum is the 16-bit one's complement of the one's complement sum of a pseudo header of information from the IP header, the UDP header, and the data, padded with zero octets at the end (if necessary) to make a multiple of two octets.
 

Field Key:  Not applicable

 

Data value (decimal): E9 DB

 

Data values in other bases:

 

Hexadecimal

E

9

D

B

Binary

1110

1001

1101

1011

 

Programming Hint: The name for this variable in code will be IP_Checksum_UDP.

 

IP PDU > Data for the selected UDP PDU

 

Field Name: Data

 

Purpose and Definition:  
 

Field Key:  Not applicable

 

Data value (hexadecimal): 18 01 C2 5A 0A FF 13 D0 00 00 00 00 69 6E 64 79 00 00 00 00 7F FF 11 DB 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 7F FF 13 F0 00 00 00 00 7F FF 11 F6 00 00 00 00 00 00 00 00 00 00 00 00 7F FF FF FF 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 09 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 7F FF 17 E3 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 09 00 00 00 10 05 9D D8 00 00 00 00 10 00 DB A8 00 00 00 00 0F B5 B1 74 00 00 00 00 0F AB 01 C8 00 00 00 00 10 05 9D F8 00 00 00 00 0F B5 9D D8 00 00 00 00 10 05 9D FC 00 00 00 00 0F B5 B1 74 00 00 00 00 10 05 9B 18 00 00 00 00 0F AB 02 80 00 00 00 00 00 00 00 00 00 00 00 00 00 00

 

Data values in other bases:

(ASCII): ­ Extended ASCII

 

Programming Hint: The name for this variable in code will be IP_Data_UDP.

2.2.10 UDP PDU for the selected UDP PDU

 

IP > UDP Header> Source Port for the selected UDP PDU

 

RFC Link: http://www.ietf.org/rfc/rfc0768.txt?number=768

 

Field Name: Source Port

 

Purpose and Definition:  Source Port is an optional field, when meaningful, it indicates the port of the sending  process,  and may be assumed  to be the port  to which a  reply should  be addressed  in the absence of any other information.  If not used, a value of zero is inserted.

 

Field Key:  Not applicable

 

Data value (decimal): 525

 

Data values in other bases:

 

Hexadecimal

02

0D

Binary

0010

1101

Decimal

525

 

Programming Hint: The name for this variable in code will be IP_SourcePort_UDP.

 

IP > UDP Header > Destination Port for the selected UDP PDU

 

Field Name: Destination Port

 

Purpose and Definition:  Destination Port has a meaning within the context of a particular internet destination address.
 

Field Key:  Not applicable

 

Data value (decimal): 525

 

Data values in other bases:

 

Hexadecimal

02

0D

Binary

0010

1101

Decimal

525

 

Programming Hint: The name for this variable in code will be IP_DestinationPort_UDP.

IP > UDP Header> Length for the selected UDP PDU

 

 

Field Name: Length

 

Purpose and Definition:  Length is the length in octets of this user datagram including this header and the data (This means the minimum value of the length is eight).
 

Field Key:  Not applicable

 

Data value (decimal): 276

 

Data values in other bases:

 

Hexadecimal

01

14

Binary

0001

00001 0100

Decimal

276

 

Programming Hint: The name for this variable in code will be IP_Length_UDP.

IP > UDP Header > Checksum for the selected UDP PDU

 

 

Field Name: Checksum

 

Purpose and Definition:  Checksum is the 16-bit one's complement of the one's complement sum of a pseudo header of information from the IP header, the UDP header, and the data, padded with zero octets at the end (if necessary) to make a multiple of two octets.
 

Field Key:  Not applicable

 

Data value (decimal): E9 DB

 

Data values in other bases:

 

Hexadecimal

E

9

D

B

Binary

1110

1001

1101

1011

 

Programming Hint: The name for this variable in code will be IP_Checksum_UDP.

 

IP > UDP Header > Data for the selected UDP PDU

 

 

Field Name: Data

 

Purpose and Definition:  
 

Field Key:  Not applicable

 

Data value (hexadecimal): 18 01 C2 5A 0A FF 13 D0 00 00 00 00 69 6E 64 79 00 00 00 00 7F FF 11 DB 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 7F FF 13 F0 00 00 00 00 7F FF 11 F6 00 00 00 00 00 00 00 00 00 00 00 00 7F FF FF FF 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 09 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 7F FF 17 E3 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 09 00 00 00 10 05 9D D8 00 00 00 00 10 00 DB A8 00 00 00 00 0F B5 B1 74 00 00 00 00 0F AB 01 C8 00 00 00 00 10 05 9D F8 00 00 00 00 0F B5 9D D8 00 00 00 00 10 05 9D FC 00 00 00 00 0F B5 B1 74 00 00 00 00 10 05 9B 18 00 00 00 00 0F AB 02 80 00 00 00 00 00 00 00 00 00 00 00 00 00 00

 

Data values in other bases:

(ASCII): ­ Extended ASCII

 

Programming Hint: The name for this variable in code will be IP_Data_UDP.

 

2.2.11 IP PDU for the selected SNMP PDU

 

IP PDU > IP Version for the selected SNMP PDU

 

Field Name: IP Version

 

Purpose and Definition:  Version is a 4-bit field that indicates the format of the internet header.

 

Field Key:       4 = IPv4

            6 = IPv6

 

Data value (decimal):  4

 

Data values in other bases:

 

Hexadecimal

4

Binary

0100

Decimal

4

 

Programming Hint: The name for this variable in code will be IP_IPVersion_SNMP.

IP PDU > Internet Header Length for the selected SNMP PDU

 

Field Name:  Internet Header Length

 

Purpose and Definition:  The IHL field is a 4-bit field indicating the length of the internet header in 32 bit words, and thus points to the beginning of the data.  The minimum value of a correct header is 5.

 

Field Key:  Not applicable

 

Data value:  The value contained in our field is 20 bytes.  This is the hexadecimal and decimal value of 5 multiplied by 4 bits.

 

Data values in other bases:

 

Hexadecimal

0

5

Binary

0000

0101

Decimal

5

 

Programming Hint: The name for this variable in code will be IP_IHL_SNMP.

IP PDU > Type of Service for the selected SNMP PDU

 

Field Name:  Type of Service

 

Purpose and Definition:  Type of Service is an 8-bit field that provides and indication of the abstract parameters of the quality of service desired.  These parameters guide the selection of the actual service parameters when transmitting a datagram through a particular network.

 

Field Key:  The major choice is a three-way tradeoff between low-delay, high-reliability, and high-throughput.

 

 

 

 


Bits 0-2: Precedence

Bit 3: (D)  0 = Normal Delay                1 = Low Delay

Bit 4: (T)  0 = Normal Throughput        1 = High Throughput

Bit 5: (R)  0 = Normal Reliability           1 = High Reliability

 

Precedence:

            111 = Network Control                        011 = Flash

            110 = Internetwork Control                  010 = Immediate

            101 = CRITIC/ECP                             001 = Priority

            100 = Flash Overrided             000 = Routine

 

Data value (hexadecimal): 10

 

Data values in other bases:

 

Hexadecimal

1

0

Binary

0001

0000

Decimal

16

 

Programming Hint: The name for this variable in code will be IP_TypeOfService_SNMP.

IP PDU > Total Length of Ethernet Frame for the selected SNMP PDU

 

Field Name: Total Length of Ethernet Frame

 

Purpose and Definition: Total Length is a 16-bit field that indicates the length of the frame, measured in octets, including internet header and data.  The maximum size is 216-1 or 65,535 octets; however, the recommended maximum size is 576 octets.

 

Field Key:  Not applicable

 

Data values (decimal):  109

 

Data values in other bases:

 

Hexadecimal

6

D

Binary

110

1101

Decimal

109

 

Programming Hint: The name for this variable in code will be IP_TotalLength_SNMP.

IP PDU > Identification for the selected SNMP PDU

 

Field Name:  Identification

 

Purpose and Definition:  Identification is a 16-bit field.  An identifying value is assigned by the sender to aid in assembling the fragments of a datagram.  The identifier is chosen based on the need to provide a way to uniquely identify the fragments and protocol for the time the datagram or any fragment could be alive in the internet.

 

Field Key:  Not applicable

 

Data value (hexadecimal): D5 1A

 

Data values in other bases:

 

Hexadecimal

D

5

1

A

Binary

1101

0101

0001

1010

 

Programming Hint: The name for this variable in code will be IP_Idenfification_SNMP.

IP PDU > Flags for the selected SNMP PDU

 

Field Name:  Flags

 

Purpose and Definition:  Flags is a 3-bit field that indicates directions for fragmentation.

 

Field Key:

Bit 0: reserved, must be 0

Bit 1: (DF)  0 = May Fragment             1 = Don’t Fragment

Bit 2: (MF) 0 = Last Fragment              1 = More Fragment

 

Data value (binary): 010

 

Data values in other bases:  Not applicable

 

Programming Hint: The name for this variable in code will be IP_Flags_SNMP.

 

IP PDU > Fragment Offset for the selected SNMP PDU

 

Field Name:  Fragment Offset

 

Purpose and Definition:  The Fragment Offset is a 13- bit field indicating where in the Ethernet frame this fragment begins.  The Fragment Offset is measured in units of 8 octets, and the first fragment has offset 0.

 

Field Key:  Not applicable

 

Data value (decimal): 0

 

Data values in other bases:

Binary: 0000 0000 0000

 

Programming Hint: The name for this variable in code will be IP_FragmentOffset_SNMP.

IP PDU > Time to Live for the selected SNMP PDU

 

Field Name: Time to Live

 

Purpose and Definition:  Time to Live is an 8-bit field that indicates the maximum time the datagram is allowed to remain in the internet.  If this field contains the value 0, then the datagram must be destroyed.  This field is modified in internet header processing.  The time is measure in units of seconds, and is set by the sender to the maximum time the datagram is allowed to be in the internet.  This field is decreased at each point that the internet header is processed.  The intention is to cause undeliverable packets to be discarded, and to bind the maximum datagram lifetime.

 

Field Key:  Not applicable

 

Data value (decimal): 64

 

Data values in other bases:

 

Hexadecimal

4

0

Binary

0100

0000

Decimal

64

 

Programming Hint: The name for this variable in code will be IP_TimeToLive_SNMP.

IP PDU > Protocol for the selected SNMP PDU

 

Field Name:  Protocol

 

Purpose and Definition:  Protocol is an 8-bit field that indicates the next level protocol that is used in the data portion of the internet diagram.

 

Field Key:

Dec Hex         Protocol                                                          Dec                 Hex        Protocol

0            00      Reserved                                                          22                    16           Multiplexing

1            01      ICMP                                                              23                    17           DCN

2            02      Unassigned                                                       24                    18           TAC Monitoring       

3            03      Gateway-to-Gateway                                       25-76               19-4C     Unassigned               

4            04      CMCC Gateway Monitoring Message  77                    4D          Any local network

5            05      ST                                                                    100                  64           SATNET and Backroom EXPAK

6            06      TCP                                                                 101                  65           MIT Subnet Support

7            07      UCL                                                                102-104           66-68      Unassigned

10          0A     Unassigned                                                       105                  69           SATNET Monitoring

11          0B      Secure                                                              106                  6A          Unassigned

12          0C     BBN RCC Monitoring                          107                  6B           Internet Packet Core Utility

13          0D     NVP                                                                110-113           6E-71     Unassigned

14          0E      PUP                                                                 114                  72           Backroom SATNET Monitoring

15         0F      Pluribus                                                            115                  73           Unassigned

16        10       Telnet                                                               116                  74           WIDEBAND Monitoring

17        11       XNET                                                              117                  75           WIDEBAND EXPAK

20        14       Chaos                                                              120-376           78-0178  Unassigned

21        15       User Datagram                                     377                  0179        Reserved

 

Data value (hexadecimal): 06

 

Data values in other bases:

 

Hexadecimal

1

1

Binary

1

0001

Decimal

17

 

RFC Link: http://www.faqs.org/rfcs/rfc790.html

 

Programming Hint: The name for this variable in code will be IP_Protocol_SNMP.

IP PDU > Header Checksum for the selected SNMP PDU

 

Field Name:  Header Checksum

 

Purpose and Definition:  The Header Checksum is a 16-bit field.  The Checksum is the 16-bit one’s complement sum of all 16-bit words in the header.  For purposes of computing the checksum, the initial value of its field is zero.  When both header checksums are equal, then the header bits are correct.  If either checksums vary, then a new, correct packet will need to be sent.

 

This is a simple way to compute the checksum and experimental evidence indicates that it is adequate, but it is provisional and may be replaced by a CRC procedure, depending on further experience.

 

Field Key:  Not applicable

 

Data value (hexadecimal): 22 F0

 

Data values in other bases:

 

Hexadecimal

2

2

F

0

Binary

10

0010

1111

0000

 

Programming Hint: The name for this variable in code will be IP_HeaderChecksum_SNMP

IP PDU > Source Address for the selected SNMP PDU

 

Field Name:  Source Address

 

Purpose and Definition:  The Source Address is a 32-bit field that contains the IP address of the host that sent the IP Packet.

 

Field Key:  Not applicable

 

Data value (decimal):  192.168.0.39

 

Data values in other bases:

 

Hexadecimal

C

0

A

8

0

0

2

7

Binary

1100

0000

1010

1000

0000

0000

0010

0111

Decimal

192

168

0

39

 

Programming Hint: The name for this variable in code will be IP_SourceAddress_SNMP

.
IP PDU > Destination Address for the selected SNMP PDU

 

Field Name:  Destination Address

 

Purpose and Definition:  The Destination Address is a 32-bit field that contains the address of the host that is to receive the data contained within the IP packet.

 

Field Key: Not applicable

 

Data value (decimal):  192.168.0.143

 

Data values in other bases:

 

Hexadecimal

C

0

A

8

0

0

8

f

Binary

1100

0000

1010

1000

0000

0000

1000

1111

Decimal

192

168

0

143

 

Programming Hint: The name for this variable in code will be IP_DestinationAddress_SNMP

 

2.2.12 UDP PDU for the selected SNMP PDU

 

IP > UDP PDU > Source Port for the selected SNMP PDU

 

RFC Link: http://www.ietf.org/rfc/rfc0768.txt?number=768

 

Field Name: Source Port

 

Purpose and Definition:  Source Port is an optional field, when meaningful, it indicates the port of the sending  process,  and may be assumed  to be the port  to which a  reply should  be addressed  in the absence of any other information.  If not used, a value of zero is inserted.

 

Field Key:  Not applicable

 

Data value (decimal): 161

 

Data values in other bases:

 

Hexadecimal

A

1

Binary

1010

0001

Decimal

161

 

Programming Hint: The name for this variable in code will be IP_SourcePort_UDP_SMNP.

 

IP > UDP PDU> Destination Port for the selected SNMP PDU

 

 

Field Name: Destination Port

 

Purpose and Definition:  Destination Port has a meaning within the context of a particular internet destination address.
 

Field Key:  Not applicable

 

Data value (decimal): 1034

 

Data values in other bases:

 

Hexadecimal

40

0A

Binary

0010

1101

Decimal

1034

 

Programming Hint: The name for this variable in code will be IP_DestinationPort_UDP_SMNP.

IP > UDP Length for the selected SNMP PDU

 

Field Name: Length

 

Purpose and Definition:  Length is the length in octets of this user datagram including this header and the data (This means the minimum value of the length is eight).
 

Field Key:  Not applicable

 

Data value (decimal): 89

 

Data values in other bases:

 

Hexadecimal

5

9

Binary

0101

1001

Decimal

89

 

Programming Hint: The name for this variable in code will be IP_Length_UDP_SNMP.

IP > UDP PDU > Checksum for the selected SNMP PDU

 

Field Name: Checksum

 

Purpose and Definition:  Checksum is the 16-bit one's complement of the one's complement sum of a pseudo header of information from the IP header, the UDP header, and the data, padded with zero octets at the end (if necessary) to make a multiple of two octets.
 

Field Key:  Not applicable

 

Data value (hexadecimal): 9A25

 

Data values in other bases:

 

Hexadecimal

9

A

2

5

Binary

1001

0000

0010

0101

Decimal

154

37

 

Programming Hint: The name for this variable in code will be IP_Checksum_UDP_SNMP.

 

IP > UDP PDU > Data for the selected SNMP PDU

 

Field Name: Data

 

Purpose and Definition:  
 

Field Key:  Not applicable

 

Data value (hexadecimal): see SNMP

 

Data values in other bases:

(ASCII): ­ Extended ASCII

 

Programming Hint: The name for this variable in code will be IP_Data_UDP_SNMP.

 

 

2.2.13 SNMP PDU for the selected SNMP PDU

 

IP > UDP > SNMP Header > Version for the selected SNMP PDU

 

Field Name:  Version

 

Purpose and Definition:  Version is a 6-bit field that indicates the format of the protocol

 

Field Key: Not applicable

 

Data value (hexadecimal):  02 01 00

 

Data values in other bases:

 

Hexadecimal

0

2

0

1

0

0

Binary

0000

0010

0000

0001

0000

0000

Decimal

2

1

0

 

Programming Hint: The name for this variable in code will be IP_UDP_SNMP_Version.

IP > UDP > SNMP Header > Community for the selected SNMP PDU

 

Field Name:  Community

 

Purpose and Definition:

 

Field Key:       Public: all users

Private: Selected users             

 

Data value:  The value contained in our field determines who view the information

 

Data values in other bases:

 

Hexadecimal

0

6

7

0

7

5

6

2

6

C

Binary

0000

0110

0111

0000

0111

0101

0110

0010

0110

1100

Decimal

1

1

8

10

7

ASCII

©

©

©

©

©

  

Hexadecimal

6

9

6

3

Binary

0110

1001

0110

0011

Decimal

105

99

ASCII

i

c

 

Programming Hint: The name for this variable in code will be IP_UDP_SNMP_Community.

IP > UDP > SNMP Header > PDU Type for the selected SNMP PDU

 

Field Name: PDU Type

 

Purpose and Definition: The type of data.

 

Field Key:  Not applicable

                       

Data value (hexadecimal):  A2 42

 

Values in other bases:

 

Hexadecimal

A

2

4

2

Binary

1010

0010

0100

0010

Decimal

162

66

ASCII

á

B

 

Programming Hint: The name for this variable in code will be IP_UDP_SNMP_PDUType

IP > UDP > SNMP Header > Request ID for the selected SNMP PDU

 

Field Name:  Request ID

 

Purpose and Definition: ID of the requester.

 

Field Key:  Not applicable

 

Data value (hexadecimal):  51 EB

 

Data values in other bases:

 

Hexadecimal

5

1

E

B

Binary

0101

0001

1110

1011

Decimal

81

235

ASCII

Q

á

 

Programming Hint: The name for this variable in code will be IP_UDP_SNMP_Request.

IP > UDP > SNMP Header > Error Status for the selected SNMP PDU

 

Field Name:  Error Status

 

Purpose and Definition: If there is an error, it will show here

 

Field Key:  Not applicable.

 

Data value:  No error

 

Data values in other bases: Not applicable

 

Programming Hint: The name for this variable in code will be IP_UDP_SNMP_ErrorStatus.

IP > UDP > SNMP Header > Error ID for the selected SNMP PDU

 

Field Name:  Error Index

 

Purpose and Definition: How the error is defined.

 

Field Key: Not applicable.

                       

Data value (hexadecimal):  02 01 00

 

Data values in other bases:

 

Hexadecimal

0

2

0

1

0

0

Binary

0000

0010

0000

0001

0000

0000

Decimal

2

1

0

 

Programming Hint: The name for this variable in code will be IP_UDP_SNMP_ErrorIndex.

IP > UDP > SNMP Header > Object ID for the selected SNMP PDU

 

Field Name:  Object ID

 

Purpose and Definition: How the packet is identified.

 

Field Key:  Not applicable

                       

Data value:  1.3.6.1.2.1.25.3.5.1.1.1

 

Data values in other bases:

 

Hexadecimal

1

3

6

1

2

1

2

5

3

5

Binary

0000

0011

0110

0001

0010

0001

0010

0101

0011

0101

Decimal

1

3

6

1

2

1

37

3

5

ASCII

©

©

©

©

©

©

%

©

©

  

Hexadecimal

1

1

1

Binary

0001

0001

0001

Decimal

1

1

1

ASCII

©

©

©

 

Programming Hint: The name for this variable in code will be IP_UDP_SNMP_ObjectID

IP > UDP > SNMP Header > Value Integer for the selected SNMP PDU

 

Field Name:  Value Integer

 

Purpose and Definition: The size of the integer

 

Field Key:  Not applicable.

                       

Data value (hexadecimal):  3

 

Data values in other bases:

 

Hexadecimal

3

Binary

11

Decimal

3

 

Programming Hint: The name for this variable in code will be IP_UDP_SNMP_Value_Integer

 

IP > UDP > SNMP Header > Object ID for the selected SNMP PDU

 

Field Name:  Object ID

 

Purpose and Definition: How the packet is identified.

 

Field Key:  Not applicable

                       

Data value:  1.3.6.1.2.1.25.3.5.1.1.1

 

Data values in other bases:

 

Hexadecimal

        1         3       6     1        2      1          25    3         5      1       1         1

 

Binary

0001 0011 0110 0001 0010 0001 11001 0011 0101 0001  0001 0001

 

Decimal

n/a

 

Programming Hint: The name for this variable in code will be SNMP_Object Id

2.2.14 IP PDU for the TELNET PDU

 

IP PDU > IP Version for the selected TELNET PDU

 

Field Name: IP Version

 

Purpose and Definition:  Version is a 4-bit field that indicates the format of the internet header.

 

Field Key:       4 = IPv4

            6 = IPv6

 

Data value (decimal):  4

 

Data values in other bases:

 

Hexadecimal

4

Binary

0100

Decimal

4

 

Programming Hint: The name for this variable in code will be IP_IPVersion_TELNET.

 

IP PDU > Internet Header Length for the selected TELNET PDU

 

Field Name:  Internet Header Length

 

Purpose and Definition:  The IHL field is a 4-bit field indicating the length of the internet header in 32 bit words, and thus points to the beginning of the data.  The minimum value of a correct header is 5.

 

Field Key:  Not applicable

 

Data value:  The value contained in our field is 20 bytes.  This is the hexadecimal and decimal value of 5 multiplied by 4 bits.

 

Data values in other bases:

 

Hexadecimal

5

Binary

0101

Decimal

5

 

Programming Hint: The name for this variable in code will be IP_IHL_TELNET.

IP PDU > Type of Service for the selected TELNET PDU

 

Field Name:  Type of Service

 

Purpose and Definition:  Type of Service is an 8-bit field that provides and indication of the abstract parameters of the quality of service desired.  These parameters guide the selection of the actual service parameters when transmitting a datagram through a particular network.

 

Field Key:  The major choice is a three-way tradeoff between low-delay, high-reliability, and high-throughput.

 

 

 

 


Bits 0-2: Precedence

Bit 3: (D)  0 = Normal Delay                1 = Low Delay

Bit 4: (T)  0 = Normal Throughput        1 = High Throughput

Bit 5: (R)  0 = Normal Reliability           1 = High Reliability

 

Precedence:

            111 = Network Control                        011 = Flash

            110 = Internetwork Control                  010 = Immediate

            101 = CRITIC/ECP                             001 = Priority

            100 = Flash Overrided             000 = Routine

 

Data value (hexadecimal): 10

 

Data values in other bases:

 

Hexadecimal

1

0

Binary

0001

0000

Decimal

16

 

Programming Hint: The name for this variable in code will be IP_TypeOfService_TELNET.

IP PDU > Total Length of Ethernet Frame for the selected TELNET PDU

 

Field Name: Total Length of Ethernet Frame

 

Purpose and Definition: Total Length is a 16-bit field that indicates the length of the frame, measured in octets, including internet header and data.  The maximum size is 216-1 or 65,535 octets; however, the recommended maximum size is 576 octets.

 

Field Key:  Not applicable

 

Data values (decimal):  128

 

Data values in other bases:

 

Hexadecimal

8

0

Binary

1000

0000

Decimal

128

 

Programming Hint: The name for this variable in code will be IP_TotalLength_TELNET.

IP PDU > Identification for the selected TELNET PDU

 

Field Name:  Identification

 

Purpose and Definition:  Identification is a 16-bit field.  An identifying value is assigned by the sender to aid in assembling the fragments of a datagram.  The identifier is chosen based on the need to provide a way to uniquely identify the fragments and protocol for the time the datagram or any fragment could be alive in the internet.

 

Field Key:  Not applicable

 

Data value (hexadecimal): C7 57

 

Data values in other bases:

 

Hexadecimal

C

7

5

7

Binary

1100

0111

0101

0111

Decimal

199

87

 

Programming Hint: The name for this variable in code will be IP_Idenfification_TELNET.

 

IP PDU > Flags for the selected TELNET PDU

 

Field Name:  Flags

 

Purpose and Definition:  Flags is a 3-bit field that indicates directions for fragmentation.

 

Field Key:

Bit 0: reserved, must be 0

Bit 1: (DF)  0 = May Fragment             1 = Don’t Fragment

Bit 2: (MF) 0 = Last Fragment              1 = More Fragment

 

Data value (binary): 001

 

Data values in other bases:  Not applicable

 

Programming Hint: The name for this variable in code will be IP_Flags_TELNET.

 

IP PDU > Fragment Offset for the selected TELNET PDU

 

Field Name:  Fragment Offset

 

Purpose and Definition:  The Fragment Offset is a 13- bit field indicating where in the Ethernet frame this fragment begins.  The Fragment Offset is measured in units of 8 octets, and the first fragment has offset 0.

 

Field Key:  Not applicable

 

Data value (decimal): 0

 

Data values in other bases:

Binary: 0000 0000 0000

 

Programming Hint: The name for this variable in code will be IP_FragmentOffset_TELNET.

 

IP PDU > Time to Live for the selected TELNET PDU

 

Field Name: Time to Live

 

Purpose and Definition:  Time to Live is an 8-bit field that indicates the maximum time the datagram is allowed to remain in the internet.  If this field contains the value 0, then the datagram must be destroyed.  This field is modified in internet header processing.  The time is measure in units of seconds, and is set by the sender to the maximum time the datagram is allowed to be in the internet.  This field is decreased at each point that the internet header is processed.  The intention is to cause undeliverable packets to be discarded, and to bind the maximum datagram lifetime.

 

Field Key:  Not applicable

 

Data value (decimal): 64

 

Data values in other bases:

 

Hexadecimal

4

0

Binary

0100

0000

Decimal

64

 

Programming Hint: The name for this variable in code will be IP_TimeToLive_TELNET.
IP PDU > Protocol for the selected TELNET PDU

 

Field Name:  Protocol

 

Purpose and Definition:  Protocol is an 8-bit field that indicates the next level protocol that is used in the data portion of the internet diagram.

 

Field Key:

Dec Hex         Protocol                                                          Dec                 Hex        Protocol

0            00      Reserved                                                          22                    16           Multiplexing

1            01      ICMP                                                              23                    17           DCN

2            02      Unassigned                                                       24                    18           TAC Monitoring       

3            03      Gateway-to-Gateway                                       25-76               19-4C     Unassigned               

4            04      CMCC Gateway Monitoring Message  77                    4D          Any local network

5            05      ST                                                                    100                  64           SATNET and Backroom EXPAK

6            06      TCP                                                                 101                  65           MIT Subnet Support

7            07      UCL                                                                102-104           66-68      Unassigned

10          0A     Unassigned                                                       105                  69           SATNET Monitoring

11          0B      Secure                                                              106                  6A          Unassigned

12          0C     BBN RCC Monitoring                          107                  6B           Internet Packet Core Utility

13          0D     NVP                                                                110-113           6E-71     Unassigned

14          0E      PUP                                                                 114                  72           Backroom SATNET Monitoring

15          0F      Pluribus                                                            115                  73           Unassigned

16        10       Telnet                                                               116                  74           WIDEBAND Monitoring

17        11       XNET                                                              117                  75           WIDEBAND EXPAK

20        14       Chaos                                                              120-376           78-0178  Unassigned

21        15       User Datagram                                     377                  0179        Reserved

 

Data value (hexadecimal): 06

 

Data values in other bases:

 

Hexadecimal

0

6

Binary

0000

0110

Decimal

6

 

RFC Link: http://www.faqs.org/rfcs/rfc790.html

 

Programming Hint: The name for this variable in code will be IP_Protocol_TELNET

 

IP PDU > Header Checksum for the selected TELNET PDU

 

Field Name:  Header Checksum

 

Purpose and Definition:  The Header Checksum is a 16-bit field.  The Checksum is the 16-bit one’s complement sum of all 16-bit words in the header.  For purposes of computing the checksum, the initial value of its field is zero.  When both header checksums are equal, then the header bits are correct.  If either checksums vary, then a new, correct packet will need to be sent.

 

This is a simple way to compute the checksum and experimental evidence indicates that it is adequate, but it is provisional and may be replaced by a CRC procedure, depending on further experience.

 

Field Key:  Not applicable

 

Data value (hexadecimal): F1 85

 

Data values in other bases:

 

Hexadecimal

F

1

8

5

Binary

1111

0001

0100

0101

 

Programming Hint: The name for this variable in code will be IP_HeaderChecksum_TELNET.

 

IP PDU > Source Address for the selected TELNET PDU

 

Field Name:  Source Address

 

Purpose and Definition:  The Source Address is a 32-bit field that contains the IP address of the host that sent the IP Packet.

 

Field Key:  Not applicable

 

Data value (decimal):  192.168.0.101

 

Data values in other bases:

 

Hexadecimal

C

0

A

8

0

0

6

5

Binary

1100

0000

1010

1000

0000

0000

0110

0101

Decimal

192

168

0

101

 

Programming Hint: The name for this variable in code will be IP_SourceAddress_TELNET.

 

 

IP PDU > Destination Address for the selected TELNET PDU

 

Field Name:  Destination Address

 

Purpose and Definition:  The Destination Address is a 32-bit field that contains the address of the host that is to receive the data contained within the IP packet.

 

Field Key: Not applicable

 

Data value (decimal):  192.168.0.39

 

Data values in other bases:

 

Hexadecimal

C

0

A

8

0

0

2

7

Binary

1100

0000

1010

1000

0000

0000

0010

0111

Decimal

192

168

0

39

 

Programming Hint: The name for this variable in code will be IP_DestinationAddress_TELNET.

 

2.2.15 TCP PDU for TELNET PDU

 

IP > TCP PDU > Source Port for the selected TELNET PDU

 

Field Name:  Source Port

 

Purpose and Definition:

This 16-bit number represents the name of the application that sent the data in the IP packet.

 

Field Key:  Not applicable

 

Data value: TELNET (23)

 

Data values in other bases:

 

Hexadecimal

0

0

1

7

Binary

0000

0000

0001

0111

Decimal

0

23

ASCII

©

©

 

Programming Hint: The name for this variable in code will be IP_TCP_SourcePort_TELNET.

IP > TCP PDU > Destination Port for the selected TELNET PDU

 

Field Name: Destination Port

 

Purpose and Definition:
This 16-bit number represents the name of the application that is to receive the data contained within the IP packet. This is one of the major differences between a Layer 3 and a Layer 4 header: the Layer 3 header contains the IP address of the computer that is to receive the IP packet; once that packet has been received, the port address in the Layer 4 header ensures that the data contained within that IP packet is passed to the correct application on that computer.

 

Field Key:

This key indicates assigned port number values:

 

Dec                       Port Numbers

0                                            Reserved
1-32767                 Internet registered ("well-known") protocols
32768-98303         Reserved, to allow TCPv7-TCPv4 conversion
98304 & up            Dynamic assignment

 

Data value (hexadecimal): 8025

 

Data values in other bases:

 

Hexadecimal

8

0

2

5

Binary

1000

0000

0010

0101

Decimal

128

37

ASCII

á

%

 

Source: http://www.zvon.org/tmRFC/RFC1475/Output/chapter4.html

 

Programming Hint: The name for this variable in code will be IP_TCP_DestinationPort_TELNET.

IP > TCP PDU > Sequence Number for the selected TELNET PDU

 

Field Name:  Sequence Number

 

Purpose and Definition:
TCP is responsible for ensuring that all IP packets sent are actually received. When an application's data is packaged into IP packets, TCP will give each IP packet a sequence number. Once all the packets have arrived at the receiving computer, TCP uses the number in this 32-bit field to ensure that all of the packets actually arrived and are in the correct sequence.

 

Field Key:  Not applicable

 

Data value (decimal): 2635302920

 

Data values in other bases:

 

Hexadecimal

9

D

1

3

8

8

0

8

Binary

1001

1101

0001

0011

1000

1000

0000

1000

Decimal

157

19

136

8

ASCII

á

©

á

©

 

Programming Hint: The name for this variable in code will be IP_TCP_SequenceNumber_TELNET.

IP > TCP PDU > Acknowledgement Number for the selected TELNET PDU

 

Field Name: Acknowledgement Number

Purpose and Definition:
This number is used by the receiving computer to acknowledge which packets have successfully arrived. This number will be the sequence number of the next packet the receiver is ready to receive.

Field Key:  Not applicable

 

Data value: 2526101253

 

Data values in other bases:

 

Hexadecimal

9

6

9

1

3

F

0

5

Binary

1001

0110

1001

0001

0011

1111

0000

0101

Decimal

150

145

63

5

ASCII

á

á

?

©

 

Programming Hint: The name for this variable in code will be IP_TCP_AcknowledgementNumber_TELNET.

IP > TCP PDU > Header Length or Offset for the selected TELNET PDU

 

Field Name:  Header Length or Offset

 

Purpose and Definition:
This is identical in concept to the header length in an IP packet, except this time it indicates the length of the TCP header.

 

Field Key:  Not applicable

Data value (bytes): 32

Data values in other bases:

 

Hexadecimal

8

0

Binary

1000

0000

Decimal

128

ASCII

á

 

Programming Hint: The name for this variable in code will be IP_TCP_HeaderLength_TELNET.

IP > TCP PDU > Control Flags for the selected TELNET PDU

 

Field Name:  Control Flags

 

Purpose and Definition:
Every TCP packet contains this 6-bit value that indicates how many octets it can receive at once. When IP packets are received, they are placed in a temporary area of RAM known as a buffer until the receiving computer has a chance to process them; this value represents how big a buffer the receiving host has made available for this temporary storage of IP packets.

 

Field Key:

 

Data value (binary): 0001 1000

 

Data values in other bases: 

 

Hexadecimal

1

8

Binary

0001

1000

Decimal

24

ASCII

©

 

Programming Hint: The name for this variable in code will be IP_TCP_ControlFlags_TELNET.

 

 

IP > TCP PDU > Window Size for the selected TELNET PDU

 

Field Name:  Window Size

Purpose and Definition:
Every TCP packet contains this 16-bit value that indicates how many octets it can receive at once. When IP packets are received, they are placed in a temporary area of RAM known as a buffer until the receiving computer has a chance to process them; this value represents how big a buffer the receiving host has made available for this temporary storage of IP packets.

 

Field Key:  Not applicable

 

Data value (decimal): 32120

 

Data values in other bases:

 

Hexadecimal

7

D

7

8

Binary

0111

1101

0111

1000

Decimal

125

120

ASCII

}

x

 

Programming Hint: The name for this variable in code will be IP_TCP_WindowSize_TELNET.

IP > TCP PDU > Checksum for the selected TELNET PDU

 

Field Name:  Checksum

 

Purpose and Definition:
Unlike IP, TCP is responsible for ensuring that the entire IP packet arrived intact. TCP will run a CRC on the entire IP packet (not just the header) and place the resulting checksum in this field. When the IP packet is received, TCP re-runs the CRC on the entire packet to ensure the checksum is the same.

 

Field Key:  Not applicable

 

Data value (hexadecimal): 59 89

 

Data values in other bases:

 

Hexadecimal

5

9

8

9

Binary

0101

1001

1000

1001

Decimal

89

137

ASCII

Y

á

 

Programming Hint: The name for this variable in code will be IP_TCP_Checksum_TELNET.

IP > TCP PDU > No Operation for the selected TELNET PDU

 

Field Name:  No Operation

 

Purpose and Definition:
This option may be used between options, for example, to align the beginning of a subsequent option on a 32 bit boundary.  May be copied, introduced, or deleted on fragmentation, or for any other reason.  This option may be created by one or many octet fields.

 

Field Key:  Not applicable

 

Data value (hexadecimal): 01 01

 

Data values in other bases:

 

Hexadecimal

0

1

0

1

Binary

0000

0001

0000

0001

Decimal

©

©

 

Programming Hint: The name for this variable in code will be IP_TCP_NoOperation_TELNET.

IP > TCP PDU > Timestamp for the selected TELNET PDU

 

Field Name:  Timestamp

 

Purpose and Definition:
Unlike IP, TCP is responsible for ensuring that the entire IP packet arrived intact. TCP will run a CRC on the entire IP packet (not just the header) and place the resulting checksum in this field. When the IP packet is received, TCP re-runs the CRC on the entire packet to ensure the checksum is the same.

 

Field Key: 

This key indicates assigned flag options:

Dec                 Port Numbers

  0                    time stamps only, stored in consecutive 32-bit words,

  1                    each timestamp is preceded with internet address of the registering entity,

  3                    the internet address fields are pre-specified. An IP module only registers its timestamp if it matches its own address with the next specified internet address.

 

 

Data value (hexadecimal): 08 0A 0B D1 8D EC 1A AC 06 AB

 

Data values in other bases:

 

Hexadecimal

0

8

0

A

0

B

D

1

8

D

Binary

0000

1000

0000

1010

0000

1011

1101

0001

1000

1101

Decimal

8

10

11

209

141

ASCII

©

©

©

á

á

 

Hexadecimal

E

C

1

A

A

C

0

6

A

B

Binary

1110

1100

0001

1010

1010

1100

0000

0110

1010

1011

Decimal

236

26

172

6

171

ASCII

á

©

á

©

á

 

Programming Hint: The name for this variable in code will be IP_TCP_Timestamp_TELNET.

IP > TCP PDU > Options and Padding for the selected TELNET PDU

 

Field Name: Options and Padding

 

Purpose and Definition:
Like IP options, this field is optional and represents additional instructions not covered in the other TCP fields. Again, if an option does not fill up a 32-bit word, it will be filled in with padding bits.

 

Field Key:  Not applicable

 

Data value (hexadecimal): 01 01 08  0A 0B D1 8D EC 1A AC 06 AB

 

Data values in other bases:

 

Hexadecimal

0

1

0

1

0

8

0

A

0

B

Binary

0000

0001

0000

0001

0000

1000

0000

1010

0000

1011

Decimal

1

1

8

10

11

ASCII

©

©

©

©

©

 

 

Hexadecimal

D

1

8

D

E

C

1

A

A

C

Binary

1101

0001

1000

1101

1110

1100

0001

1010

1010

1100

Decimal

209

141

236

26

172

ASCII

á

á

á

©

á

 

Hexadecimal

0

6

A

B

Binary

0000

0110

1010

1011

Decimal

6

171

ASCII

©

á

 

Programming Hint: The name for this variable in code will be IP_TCP_OptionsPadding_TELNET.

 

 

2.2.16 TELNET PDU for the TELNET PDU

 

IP >TCP > TELNET PDU for the TELNET Packet

 

RFC Link: http://www.ietf.org/rfc/rfc0959.txt?number=959

 

PASS (Password)

            The argument field is a Telnet string specifying the user’s password.  This command must be immediately preceded by the user name command, and, for some sites, completes the user’s identification for access control.

 

What is Contained in the Packet

Request:           PASS

 

Data Values (hexadecimal): 50 61 73 73 77 6F 72 64 3A 20

 

Data Values in Other Bases

 

Hexadecimal

5

0

6

1

7

3

7

7

6

F

Binary

0101

0000

0110

0001

0111

0011

0111

0111

0110

1111

Decimal

80

97

115

119

111

ASCII

P

a

s

w

o

 

Hexadecimal

7

2

6

4

3

A

2

0

Binary

0111

0010

0110

0100

0011

1010

0010

0000

Decimal

114

100

58

32

ASCII

r

d

:

©

 

Programming Hint: The name for this variable in code will be IP_TCP_TELNET_PDU_TELNET.

 

2.2.17 IP PDU for the selected SSH PDU

 

IP PDU > IP Version for the selected SSH PDU

 

Field Name: IP Version

 

Purpose and Definition:  Version is a 4-bit field that indicates the format of the internet header.

 

Field Key:       4 = IPv4

            6 = IPv6

 

Data value (decimal):  4

 

Data values in other bases:

 

Hexadecimal

4

Binary

0100

Decimal

4

 

Programming Hint: The name for this variable in code will be IP_Version_SSH.

 

IP PDU > Internet Header Length for the selected SSH PDU

 

Field Name:  Internet Header Length

 

Purpose and Definition:  The IHL field is a 4-bit field indicating the length of the internet header in 32 bit words, and thus points to the beginning of the data.  The minimum value of a correct header is 5.

 

Field Key:  Not applicable

 

Data value:  The value contained in our field is 20 bytes.  This is the hexadecimal and decimal value of 5 multiplied by 4 bits.

 

Data values in other bases:

 

Hexadecimal

5

Binary

0101

Decimal

5

 

Programming Hint: The name for this variable in code will be IP_IHL_SSH.

IP PDU > Type of Service for the selected SSH PDU

 

Field Name:  Type of Service

 

Purpose and Definition:  Type of Service is an 8-bit field that provides and indication of the abstract parameters of the quality of service desired.  These parameters guide the selection of the actual service parameters when transmitting a datagram through a particular network.

 

Field Key:  The major choice is a three-way tradeoff between low-delay, high-reliability, and high-throughput.

 

 

 

 


Bits 0-2: Precedence

Bit 3: (D)  0 = Normal Delay                1 = Low Delay

Bit 4: (T)  0 = Normal Throughput        1 = High Throughput

Bit 5: (R)  0 = Normal Reliability           1 = High Reliability

 

Precedence:

            111 = Network Control                        011 = Flash

            110 = Internetwork Control                  010 = Immediate

            101 = CRITIC/ECP                             001 = Priority

            100 = Flash Overrided             000 = Routine

 

Data value (hexadecimal): 00

 

Data values in other bases:

 

Hexadecimal

0

0

Binary

0000

0000

Decimal

0

 

Programming Hint: The name for this variable in code will be IP_TypeOfService_SSH.

IP PDU > Total Length of Ethernet Frame for the selected SSH PDU

 

Field Name: Total Length of Ethernet Frame

 

Purpose and Definition: Total Length is a 16-bit field that indicates the length of the frame, measured in octets, including internet header and data.  The maximum size is 216-1 or 65,535 octets; however, the recommended maximum size is 576 octets.

 

Field Key:  Not applicable

 

Data values (hexadecimal):  00 64

 

Data values in other bases:

 

Hexadecimal

0

0

6

4

Binary

0000

0000

0110

0100

Decimal

0

100

ASCII

.

d

 

Programming Hint: The name for this variable in code will be IP_TotalLength_SSH.

IP PDU > Identification for the selected SSH PDU

 

Field Name:  Identification

 

Purpose and Definition:  Identification is a 16-bit field.  An identifying value is assigned by the sender to aid in assembling the fragments of a datagram.  The identifier is chosen based on the need to provide a way to uniquely identify the fragments and protocol for the time the datagram or any fragment could be alive in the internet.

 

Field Key:  Not applicable

 

Data value (hexadecimal): 30 CA

 

Data values in other bases:

 

Hexadecimal

3

0

C

A

Binary

0011

0000

1100

1010

 

Programming Hint: The name for this variable in code will be IP_Idenfification_SSH.

 

IP PDU > Flags for the selected SSH PDU

 

Field Name:  Flags

 

Purpose and Definition:  Flags is a 3-bit field that indicates directions for fragmentation.

 

Field Key:

Bit 0: reserved, must be 0

Bit 1: (DF)  0 = May Fragment             1 = Don’t Fragment

Bit 2: (MF) 0 = Last Fragment              1 = More Fragment

 

Data value (binary): 001

 

Data values in other bases:  Not applicable

 

Programming Hint: The name for this variable in code will be IP_Flags_SSH.

 

IP PDU > Fragment Offset for the selected SSH PDU

 

Field Name:  Fragment Offset

 

Purpose and Definition:  The Fragment Offset is a 13- bit field indicating where in the Ethernet frame this fragment begins.  The Fragment Offset is measured in units of 8 octets, and the first fragment has offset 0.

 

Field Key:  Not applicable

 

Data value (decimal): 0

 

Data values in other bases:

Binary: 0 0000 0000 0000

 

Programming Hint: The name for this variable in code will be IP_FragmentOffset_SSH.

 

IP PDU > Time to Live for the selected SSH PDU

 

Field Name: Time to Live

 

Purpose and Definition:  Time to Live is an 8-bit field that indicates the maximum time the datagram is allowed to remain in the internet.  If this field contains the value 0, then the datagram must be destroyed.  This field is modified in internet header processing.  The time is measure in units of seconds, and is set by the sender to the maximum time the datagram is allowed to be in the internet.  This field is decreased at each point that the internet header is processed.  The intention is to cause undeliverable packets to be discarded, and to bind the maximum datagram lifetime.

 

Field Key:  Not applicable

 

Data value (decimal): 64

 

Data values in other bases:

 

Hexadecimal

4

0

Binary

0100

0000

Decimal

64

 

Programming Hint: The name for this variable in code will be IP_TimeToLive_SSH.
IP PDU > Protocol for the selected SSH PDU

 

Field Name:  Protocol

 

Purpose and Definition:  Protocol is an 8-bit field that indicates the next level protocol that is used in the data portion of the internet diagram.

 

Field Key:

Dec Hex         Protocol                                                          Dec                 Hex        Protocol

0            00      Reserved                                                          22                    16           Multiplexing

1            01      ICMP                                                              23                    17           DCN

2            02      Unassigned                                                       24                    18           TAC Monitoring       

3            03      Gateway-to-Gateway                                       25-76               19-4C     Unassigned               

4            04      CMCC Gateway Monitoring Message  77                    4D          Any local network

5            05      ST                                                                    100                  64           SATNET and Backroom EXPAK

6            06      TCP                                                                 101                  65           MIT Subnet Support

7            07      UCL                                                                102-104           66-68      Unassigned

10          0A     Unassigned                                                       105                  69           SATNET Monitoring

11          0B      Secure                                                              106                  6A         Unassigned

12          0C     BBN RCC Monitoring                          107                  6B           Internet Packet Core Utility

13          0D     NVP                                                                110-113           6E-71     Unassigned

14          0E      PUP                                                                 114                  72           Backroom SATNET Monitoring

15          0F      Pluribus                                                            115                  73           Unassigned

16        10       SSH                                                                 116                  74           WIDEBAND Monitoring

17        11       XNET                                                              117                  75           WIDEBAND EXPAK

20        14       Chaos                                                              120-376           78-0178  Unassigned

21        15       User Datagram                                     377                  0179        Reserved

 

Data value (hexadecimal): 11

 

Data values in other bases:

 

Hexadecimal

0

6

Binary

0000

0110

Decimal

6

 

RFC Link: http://www.faqs.org/rfcs/rfc790.html

 

Programming Hint: The name for this variable in code will be IP_Protocol_SSH

 

IP PDU > Header Checksum for the selected SSH PDU

 

Field Name:  Header Checksum

 

Purpose and Definition:  The Header Checksum is a 16-bit field.  The Checksum is the 16-bit one’s complement sum of all 16-bit words in the header.  For purposes of computing the checksum, the initial value of its field is zero.  When both header checksums are equal, then the header bits are correct.  If either checksums vary, then a new, correct packet will need to be sent.

 

This is a simple way to compute the checksum and experimental evidence indicates that it is adequate, but it is provisional and may be replaced by a CRC procedure, depending on further experience.

 

Field Key:  Not applicable

 

Data value (hexadecimal): 87 AE

 

Data values in other bases:

 

Hexadecimal

8

7

A

E

Binary

1000

0111

1010

1110

 

Programming Hint: The name for this variable in code will be IP_HeaderChecksum_SSH.

 

IP PDU > Source Address for the selected SSH PDU

 

Field Name:  Source Address

 

Purpose and Definition:  The Source Address is a 32-bit field that contains the IP address of the host that sent the IP Packet.

 

Field Key:  Not applicable

 

Data value (decimal):  192.168.0.101

 

Data values in other bases:

 

Hexadecimal

C

0

A

8

0

0

6

5

Binary

1100

0000

1010

1000

0000

0000

0110

0101

Decimal

192

168

0

101

 

Programming Hint: The name for this variable in code will be IP_SourceAddress_SSH.

 

 

IP PDU > Destination Address for the selected SSH PDU

 

Field Name:  Destination Address

 

Purpose and Definition:  The Destination Address is a 32-bit field that contains the address of the host that is to receive the data contained within the IP packet.

 

Field Key: Not applicable

 

Data value (decimal):  192.168.0.39

 

Data values in other bases:

 

Hexadecimal

C

0

A

8

0

0

2

7

Binary

1100

0000

1010

1000

0000

0000

0010

0111

Decimal

192

168

0

39

 

Programming Hint: The name for this variable in code will be IP_DestinationAddress_SSH.

 

 

2.2.18 TCP PDU for the selected SSH PDU

 

IP > TCP PDU > Source Port for the selected SSH PDU

 

Field Name:  Source Port

 

Purpose and Definition:

This 16-bit number represents the name of the application that sent the data in the IP packet.

 

Field Key:  Not applicable

 

Data value: 1243

 

Data values in other bases:

 

Hexadecimal

0

4

D

B

Binary

0000

0100

1101

1011

Decimal

4

219

ASCII

©

á

 

Programming Hint: The name for this variable in code will be IP_TCP_SourcePort_SSH.

IP > TCP PDU > Destination Port for the selected SSH PDU

 

Field Name: Destination Port

 

Purpose and Definition:
This 16-bit number represents the name of the application that is to receive the data contained within the IP packet. This is one of the major differences between a Layer 3 and a Layer 4 header: the Layer 3 header contains the IP address of the computer that is to receive the IP packet; once that packet has been received, the port address in the Layer 4 header ensures that the data contained within that IP packet is passed to the correct application on that computer.

 

Field Key:

This key indicates assigned port number values:

Dec                       Port Numbers

0                                            Reserved
1-32767                 Internet registered ("well-known") protocols
32768-98303         Reserved, to allow TCPv7-TCPv4 conversion
98304 & up            Dynamic assignment

 

Data value (decimal): 1243

 

Data values in other bases:

 

Hexadecimal

0

4

D

B

Binary

0000

0100

1101

1011

Decimal

4

219

ASCII

©

á

 

 

Source: http://www.zvon.org/tmRFC/RFC1475/Output/chapter4.html

 

Programming Hint: The name for this variable in code will be IP_TCP_DestinationPort_SSH.

IP > TCP PDU > Sequence Number for the selected SSH PDU

 

Field Name:  Sequence Number

 

Purpose and Definition:
TCP is responsible for ensuring that all IP packets sent are actually received. When an application's data is packaged into IP packets, TCP will give each IP packet a sequence number. Once all the packets have arrived at the receiving computer, TCP uses the number in this 32-bit field to ensure that all of the packets actually arrived and are in the correct sequence.

 

Field Key:  Not applicable

 

Data value (decimal): 4008673261

 

Data values in other bases:

 

Hexadecimal

E

E

E

F

7

F

E

D

Binary

1110

1110

1110

1111

0111

1111

1110

1101

Decimal

238

239

127

237

ASCII

á

á

á

á

 

Programming Hint: The name for this variable in code will be IP_TCP_SequenceNumber_SSH.

IP > TCP PDU > Acknowledgement Number for the selected SSH PDU

 

Field Name: Acknowledgement Number

Purpose and Definition:
This number is used by the receiving computer to acknowledge which packets have successfully arrived. This number will be the sequence number of the next packet the receiver is ready to receive.

Field Key:  Not applicable

 

Data value: 3798775616

 

Data values in other bases:

 

Hexadecimal

E

2

6

C

B

7

4

0

Binary

1110

0010

0110

1100

1011

0111

0100

0000

Decimal

226

108

183

64

ASCII

á

l

á

@

 

Programming Hint: The name for this variable in code will be IP_TCP_AcknowledgementNumber_SSH.

IP > TCP PDU > Header Length or Offset for the selected SSH PDU

 

Field Name:  Header Length or Offset

 

Purpose and Definition:
This is identical in concept to the header length in an IP packet, except this time it indicates the length of the TCP header.

 

Field Key:  Not applicable

Data value (bytes): 32

Data values in other bases:

 

Hexadecimal

8

0

Binary

1000

0000

Decimal

128

ASCII

á

 

Programming Hint: The name for this variable in code will be IP_TCP_HeaderLength_SSH.


IP > TCP PDU > Control Flags for the selected SSH PDU

 

Field Name:  Control Flags

 

Purpose and Definition:
Every TCP packet contains this 6-bit value that indicates how many octets it can receive at once. When IP packets are received, they are placed in a temporary area of RAM known as a buffer until the receiving computer has a chance to process them; this value represents how big a buffer the receiving host has made available for this temporary storage of IP packets.

 

Field Key:

 

Data value (binary): 0001 1000

 

Data values in other bases: 

 

Hexadecimal

1

8

Binary

0001

1000

Decimal

24

ASCII

©

 

Programming Hint: The name for this variable in code will be IP_TCP_ControlFlags_SSH.

 

 

IP > TCP PDU > Window Size for the selected SSH PDU

 

Field Name:  Window Size

Purpose and Definition:
Every TCP packet contains this 16-bit value that indicates how many octets it can receive at once. When IP packets are received, they are placed in a temporary area of RAM known as a buffer until the receiving computer has a chance to process them; this value represents how big a buffer the receiving host has made available for this temporary storage of IP packets.

 

Field Key:  Not applicable

 

Data value (decimal): 32120

 

Data values in other bases:

 

Hexadecimal

7

D

7

8

Binary

0111

1101

0111

1000

Decimal

125

120

ASCII

}

x

 

Programming Hint: The name for this variable in code will be IP_TCP_WindowSize_SSH.

IP > TCP PDU > Checksum for the selected SSH PDU

 

Field Name:  Checksum

 

Purpose and Definition:
Unlike IP, TCP is responsible for ensuring that the entire IP packet arrived intact. TCP will run a CRC on the entire IP packet (not just the header) and place the resulting checksum in this field. When the IP packet is received, TCP re-runs the CRC on the entire packet to ensure the checksum is the same.

 

Field Key:  Not applicable

 

Data value (hexadecimal): 8B CA

 

Data values in other bases:

 

Hexadecimal

8

B

C

A

Binary

1000

1011

1100

1010

Decimal

139

202

ASCII

á

á

 

Programming Hint: The name for this variable in code will be IP_TCP_Checksum_SSH.

IP > TCP PDU > Options and Padding for the selected SSH PDU

 

Field Name: Options and Padding

 

Purpose and Definition:
Like IP options, this field is optional and represents additional instructions not covered in the other TCP fields. Again, if an option does not fill up a 32-bit word, it will be filled in with padding bits.

 

Field Key:  Not applicable

 

Data value (hexadecimal): 01 01 08  0A 0B D1 8D EC 1A AC 06 AB

 

Data values in other bases:

 

Hexadecimal

0

1

0

1

Binary

0000

0001

0000

0001

Decimal

©

©

 

 

 

 

Programming Hint: The name for this variable in code will be IP_TCP_OptionsPadding_SSH.

IP > TCP PDU > Timestamp for the selected SSH PDU

 

Field Name:  Timestamp

 

Purpose and Definition:
Unlike IP, TCP is responsible for ensuring that the entire IP packet arrived intact. TCP will run a CRC on the entire IP packet (not just the header) and place the resulting checksum in this field. When the IP packet is received, TCP re-runs the CRC on the entire packet to ensure the checksum is the same.

 

Field Key: 

This key indicates assigned flag options:

Dec                 Port Numbers

  0                    time stamps only, stored in consecutive 32-bit words,

  1                    each timestamp is preceded with internet address of the registering entity,

  3                    the internet address fields are pre-specified. An IP module only registers its timestamp if it matches its own address with the next specified internet address.

 

 

Data value (hexadecimal): 08 0A 14 42 6F 30 27 47 32 1F

 

Data values in other bases:

 

Hexadecimal

0

8

0

A

1

4

4

2

6

F

Binary

0000

1000

0000

1010

0001

0100

0100

0010

0110

1111

Decimal

8

10

20

66

111

ASCII

©

©

©

B

o

 

Hexadecimal

3

0

2

7

4

7

3

2

1

F

Binary

0011

0000

0010

0111

0100

0111

0011

0010

0001

1111

Decimal

48

39

71

50

31

ASCII

0

‘

G

2

©

 

Programming Hint: The name for this variable in code will be IP_TCP_Timestamp_SSH.

2.2.18 SSH PDU for the selected SSH PDU

 

IP >TCP > SSH PDU for the SSH Packet

 

RFC Link:  http://www.ietf.org/rfc/rfc0959.txt?number=959

 

PASS (Password)

            The argument field is a SSH string specifying the user’s password.  This command must be immediately preceded by the user name command, and, for some sites, completes the user’s identification for access control.  All information below is encrypted.

 

What is Contained in the Packet

Request:           PASS

 

Data Values (hexadecimal): 03 B6 51 11 6A 46 12 36 4F 46 C9 63 B1 A4 B5 48 A2 BA 68 1C 42 17 AB D2 CE 8E 6D 3F 49 7E EB 36 A0 1B 16 62 E4 0F D7 55 DD 5F EB 52 64 B9 A7 62

 

Data Values in Other Bases

 

Hexadecimal

0

3

B

6

5

1

1

1

6

A

Binary

0000

0011

1011

0110

0101

0001

0001

0001

0110

1010

Decimal

3

182

81

17

106

ASCII

©

á

Q

©

j

 

Hexadecimal

4

6

1

2

3

6

4

F

4

6

Binary

0100

0110

0001

0010

0011

0110

0100

1111

0100

0110

Decimal

70

18

54

79

70

ASCII

F

©

6

O

F

 

Hexadecimal

C

9

6

3

B

1

A

4

B

5

Binary

1100

1001

0110

0011

1011

0001

1010

0100

1011

0101

Decimal

201

99

177

164

181

ASCII

á

c

á

á

á

 

Hexadecimal

4

8

A

2

B

A

6

8

1

C

Binary

0100

1000

1010

0010

1011

1010

0110

1000

0001

1000

Decimal

72

162

178

104

28

ASCII

H

á

á

H

©

 

Hexadecimal

4

2

1

7

A

B

D

2

C

E

Binary

0100

0010

0001

0111

1010

1011

1101

0010

1100

1110

Decimal

66

23

171

210

206

ASCII

B

©

á

á

á

 

 

 

 

Hexadecimal

8

E

6

D

3

F

4

9

7

E

Binary

1000

1110

0110

1101

0011

1111

0100

1001

0111

1110

Decimal

142

109

63

73

126

ASCII

á

m

?

I

~

 

Hexadecimal

E

B

3

6

A

0

1

B

1

6

Binary

1110

1011

0011

0110

1010

0000

0001

1011

0001

0110

Decimal

235

54

160

27

22

ASCII

á

6

á

©

©

 

Hexadecimal

6

2

E

4

0

F

D

7

5

5

Binary

0110

0010

1110

0100

0000

1111

1101

0111

0101

0101

Decimal

98

228

15

215

85

ASCII

b

á

©

á

U

 

Hexadecimal

D

D

5

F

E

B

5

2

6

4

Binary

1101

1101

0101

1111

1110

1011

0101

0010

0110

0100

Decimal

221

95

235

82

100

ASCII

á

_

á

R

d

 

Hexadecimal

B

9

A

7

6

2

Binary

1011

1001

1010

0111

0110

0010

Decimal

185

167

98

ASCII

á

á

b

 

 

Programming Hint: The name for this variable in code will be IP_TCP_SSH_PDU_SSH.

2.2.20 ARP PDU for the selected ARP PDU

 

ARP PDU> Hardware Address Type > for the selected ARP PDU

 

Field Name: Hardware Address Type

 

Purpose and Definition:  The physical media that communicates on the network.

 

Field Key:  1 for Ethernet

                   2 for IEEE 802 LAN        

 

Data value (hexadecimal):  00 01

 

Data values in other bases:

 

Hexadecimal

0

0

0

1

Binary

0000

0000

0000

0001

Decimal

0

1

 

Programming Hint: The name for this variable in code will be ARP_HardwareAddressType

ARP PDU > Protocol Address Type > for the selected ARP PDU

 

Field Name: Protocol Address Type 

 

Purpose and Definition:  Defines the protocol that the terminals are using to connect with each other.

 

Field Key:  2048 IPv4 (0x0800)

 

Data value (hexadecimal): 08 00

 

Data values in other bases:

 

Hexadecimal

0

8

0

0

Binary

0000

1000

0000

0000

Decimal

8

0

 

Programming Hint: The name for this variable in code will be ARP_ProtocolAddressType.

ARP PDU > Hardware Address Length > for the selected ARP PDU

 

Field Name:  Hardware Address Length

 

Purpose and Definition: This field determines the type of hardware used.

 

Field Key:  6 Ethernet / IEE 802

 

Data value (hexadecimal): 00 06

 

Data values in other bases:

 

Hexadecimal

0

0

0

6

Binary

0000

1000

0000

0110

Decimal

0

6

 

Programming Hint: The name for this variable in code will be ARP_HardwareAddressLength.

ARP PDU >Protocol Address Length>for the selected ARP PDU

 

Field Name:  Protocol Address Length

 

Purpose and Definition: Determines the protocol used in the request or response.   .

 

Field Key:  4 for IPv4

 

Data value (hexadecimal):  02 01 00

 

Data values in other bases:

 

Hexadecimal

0

2

0

1

0

0

Binary

0000

0010

0000

0001

0000

0000

Decimal

2

1

0

 

Programming Hint: The name for this variable in code will be ARP_ProtocolAddressLength.

ARP PDU > Operation > for the selected ARP PDU

 

Field Name: Operation 

 

Purpose and Definition: Determines weather a request or a response is being called upon.

 

Field Key:  1 for request

                    2 for reply

 

Data value (hexadecimal):  00 01

 

Data values in other bases:

 

Hexadecimal

0

0

0

1

Binary

0000

0000

0000

0001

Decimal

0

1

 

Programming Hint: The name for this variable in code will be ARP_Operation

ARP PDU > Sender Hardware Address > for the selected ARP PDU

 

Field Name:  Sender Hardware Address

 

Purpose and Definition: The Physical address or MAC address of the network adapter of the sender’s terminal.

 

Field Key: 
00000C  Cisco
00000E  Fujitsu
00000F  NeXT
000010  Sytek
00001D  Cabletron
000020  DIAB (Data Intdustrier AB)
000022  Visual Technology
00002A  TRW
000032  GPT Limited (reassigned from GEC Computers Ltd)
00005A  S & Koch
00005E  IANA
000065  Network General
00006B  MIPS
000077  MIPS
00007A  Ardent
000089  Cayman Systems  Gatorbox
000093  Proteon
00009F  Ameristar Technology
0000A2  Wellfleet
0000A3  Network Application Technology
0000A6  Network General (internal assignment, not for products)
0000A7  NCD             X-terminals
0000A9  Network Systems
0000AA  Xerox           Xerox machines
0000B3  CIMLinc
0000B7  Dove            Fastnet
0000BC  Allen-Bradley
0000C0  Western Digital
0000C5  Farallon phone net card
0000C6  HP Intelligent Networks Operation (formerly Eon Systems)
0000C8  Altos
0000C9  Emulex          Terminal Servers
0000D7  Dartmouth College (NED Router)
0000D8  3Com? Novell?   PS/2
0000DD  Gould
0000DE  Unigraph
0000E2  Acer Counterpoint
0000EF  Alantec
0000FD  High Level Hardvare (Orion, UK)
000102  BBN             BBN internal usage (not registered)
0020AF  3COM ???
001700  Kabel
008064  Wyse Technology / Link Technologies
00802B  IMAC ???
00802D  Xylogics, Inc.  Annex terminal servers
00808C  Frontier Software Development
0080C2  IEEE 802.1 Committee
0080D3  Shiva
00AA00  Intel
00DD00  Ungermann-Bass
00DD01  Ungermann-Bass
020701  Racal InterLan
020406  BBN             BBN internal usage (not registered)
026086  Satelcom MegaPac (UK)
02608C  3Com            IBM PC; Imagen; Valid; Cisco
02CF1F  CMC             Masscomp; Silicon Graphics; Prime EXL
080002  3Com (Formerly Bridge)
080003  ACC (Advanced Computer Communications)
080005  Symbolics       Symbolics LISP machines
080008  BBN
080009  Hewlett-Packard
08000A  Nestar Systems
08000B  Unisys
080011  Tektronix, Inc.
080014  Excelan         BBN Butterfly, Masscomp, Silicon Graphics
080017  NSC
08001A  Data General
08001B  Data General
08001E  Apollo
080020  Sun             Sun machines
080022  NBI
080025  CDC
080026  Norsk Data (Nord)
080027  PCS Computer Systems GmbH
080028  TI              Explorer
08002B  DEC
08002E  Metaphor
08002F  Prime Computer  Prime 50-Series LHC300
080036  Intergraph      CAE stations
080037  Fujitsu-Xerox
080038  Bull
080039  Spider Systems
080041  DCA Digital Comm. Assoc.
080045  ???? (maybe Xylogics, but they claim not to know this number)
080046  Sony
080047  Sequent
080049  Univation
08004C  Encore
08004E  BICC
080056  Stanford University
080058  ???             DECsystem-20
08005A  IBM
080067  Comdesign
080068  Ridge
080069  Silicon Graphics
08006E  Concurrent      Masscomp
080075  DDE (Danish Data Elektronik A/S)
08007C  Vitalink        TransLAN III
080080  XIOS
080086  Imagen/QMS
080087  Xyplex          terminal servers
080089  Kinetics        AppleTalk-Ethernet interface
08008B  Pyramid
08008D  XyVision        XyVision machines
080090  Retix Inc       Bridges
484453  HDS ???
800010  AT&T
AA0000  DEC             obsolete
AA0001  DEC             obsolete
AA0002  DEC             obsolete
AA0003  DEC             Global physical address for some DEC machines

AA0004  DEC             Local logical address for systems running DECNET

 

Data value (hexadecimal):  00:00:E6: 34:ED:A3

 

Data values in other bases:

 

Hexadecimal

0

0

0

0

E

6

3

4

Binary

0000

0000

0000

0000

1110

0110

0011

0100

Decimal

0

0

230

52

 

Hexadecimal

E

D

A

3

Binary

1110

1101

1010

0011

Decimal

237

163

 

Programming Hint: The name for this variable in code will be ARP_SenderAddress


ARP PDU > Sender Protocol Address > for the selected ARP PDU

 

Field Name:  Sender Protocol Address

 

Purpose and Definition:  The protocol of the sender computer. This is used to identify the  senders Protocol.

 

Field Key:  N/A

 

Data value (decimal): 192.168.0.101

 

Hexadecimal

C

0

A

8

0

0

6

5

Binary

1100

0000

1010

1000

0000

0000

0110

0101

Decimal

192

168

0

101

 

Programming Hint: The name for this variable in code will be ARP_SenderProtocolAddress

ARP PDU > Target Hardware Address > for the selected ARP PDU

 

Field Name:  Target Hardware Address

 

Purpose and Definition: The Physical address or MAC address of the network adapter of the target terminal.

 

Field Key: 
00000C  Cisco
00000E  Fujitsu
00000F  NeXT
000010  Sytek
00001D  Cabletron
000020  DIAB (Data Intdustrier AB)
000022  Visual Technology
00002A  TRW
000032  GPT Limited (reassigned from GEC Computers Ltd)
00005A  S & Koch
00005E  IANA
000065  Network General
00006B  MIPS
000077  MIPS
00007A  Ardent
000089  Cayman Systems  Gatorbox
000093  Proteon
00009F  Ameristar Technology
0000A2  Wellfleet
0000A3  Network Application Technology
0000A6  Network General (internal assignment, not for products)
0000A7  NCD             X-terminals
0000A9  Network Systems
0000AA  Xerox           Xerox machines
0000B3  CIMLinc
0000B7  Dove            Fastnet
0000BC  Allen-Bradley
0000C0  Western Digital
0000C5  Farallon phone net card
0000C6  HP Intelligent Networks Operation (formerly Eon Systems)
0000C8  Altos
0000C9  Emulex          Terminal Servers
0000D7  Dartmouth College (NED Router)
0000D8  3Com? Novell?   PS/2
0000DD  Gould
0000DE  Unigraph
0000E2  Acer Counterpoint
0000EF  Alantec
0000FD  High Level Hardvare (Orion, UK)
000102  BBN             BBN internal usage (not registered)
0020AF  3COM ???
001700  Kabel
008064  Wyse Technology / Link Technologies
00802B  IMAC ???
00802D  Xylogics, Inc.  Annex terminal servers
00808C  Frontier Software Development
0080C2  IEEE 802.1 Committee
0080D3  Shiva
00AA00  Intel
00DD00  Ungermann-Bass
00DD01  Ungermann-Bass
020701  Racal InterLan
020406  BBN             BBN internal usage (not registered)
026086  Satelcom MegaPac (UK)
02608C  3Com            IBM PC; Imagen; Valid; Cisco
02CF1F  CMC             Masscomp; Silicon Graphics; Prime EXL
080002  3Com (Formerly Bridge)
080003  ACC (Advanced Computer Communications)
080005  Symbolics       Symbolics LISP machines
080008  BBN
080009  Hewlett-Packard
08000A  Nestar Systems
08000B  Unisys
080011  Tektronix, Inc.
080014  Excelan         BBN Butterfly, Masscomp, Silicon Graphics
080017  NSC
08001A  Data General
08001B  Data General
08001E  Apollo
080020  Sun             Sun machines
080022  NBI
080025  CDC
080026  Norsk Data (Nord)
080027  PCS Computer Systems GmbH
080028  TI              Explorer
08002B  DEC
 
08002E  Metaphor
08002F  Prime Computer  Prime 50-Series LHC300
080036  Intergraph      CAE stations
080037  Fujitsu-Xerox
080038  Bull
080039  Spider Systems
080041  DCA Digital Comm. Assoc.
080045  ???? (maybe Xylogics, but they claim not to know this number)
080046  Sony
080047  Sequent
080049  Univation
08004C  Encore
08004E  BICC
080056  Stanford University
080058  ???             DECsystem-20
08005A  IBM
080067  Comdesign
080068  Ridge
080069  Silicon Graphics
08006E  Concurrent      Masscomp
080075  DDE (Danish Data Elektronik A/S)
08007C  Vitalink        TransLAN III
080080  XIOS
080086  Imagen/QMS
080087  Xyplex          terminal servers
080089  Kinetics        AppleTalk-Ethernet interface
08008B  Pyramid
08008D  XyVision        XyVision machines
080090  Retix Inc       Bridges
484453  HDS ???
800010  AT&T
AA0000  DEC             obsolete
AA0001  DEC             obsolete
AA0002  DEC             obsolete
AA0003  DEC             Global physical address for some DEC machines
AA0004  DEC             Local logical address for systems running DECNET

 

Data value (hexadecimal): 00:00:00:00:00:00

 

Data values in other bases: Not applicable

 

Programming hint:  ARP_TargetHardwareAddress.

 

 

 

 

 

ARP PDU>Target Protocol Address> for the selected ARP PDU

 

Field Name: Target Protocol Address 

 

Purpose and Definition:  The protocol of the sender computer. This is used to identify the targets Protocol.

 

Field Key:  4 for IPv4

 

Data value (decimal): 192.168.0.145

 

Hexadecimal

C

0

A

8

0

0

9

1

Binary

1100

0000

1010

1000

0000

0000

1001

0001

Decimal

192

168

0

145

 

Programming hint: ARP_TargetProtocolAddress

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2.2.21 IP PDU for the selected PING PDU

 

IP PDU > Differentiated Services Field for the selected PING

 

RFC Link: http://www.ietf.org/rfc/rfc0768.txt?number=768

 

Field Name: Differentiated Services Field 

 

Purpose and Definition: Type of Service is an 8-bit field that provides and indication of the abstract parameters of the quality of service desired.  These parameters guide the selection of the actual service parameters when transmitting a datagram through a particular network. 
 

Field Key:  The major choice is a three-way tradeoff between low-delay, high-reliability, and high-throughput.

 

 

 

 


Bits 0-2: Precedence

Bit 3: (D)  0 = Normal Delay                1 = Low Delay

Bit 4: (T)  0 = Normal Throughput        1 = High Throughput

Bit 5: (R)  0 = Normal Reliability           1 = High Reliability

 

Precedence:

            111 = Network Control                        011 = Flash

            110 = Internetwork Control                  010 = Immediate

            101 = CRITIC/ECP                             001 = Priority

            100 = Flash Overrided             000 = Routine

 

 

Data value (decimal): 00

 

Data values in other bases:

 

Hexadecimal

0

0

Binary

0000

0000

Decimal

0

 

Programming Hint: The name for this variable in code will be

IP_DSF_PING.

 

 

 

 

 

IP PDU> Flags for the selected PING

 

Field Name: Flags 

 

Purpose and Definition:  Flags is a 3-bit field that indicates directions for fragmentation.
 

Field Key:  Bit 0: reserved, must be 0

Bit 1: (DF)  0 = May Fragment             1 = Don’t Fragment

Bit 2: (MF) 0 = Last Fragment              1 = More Fragment

 

Data value (hexadecimal): 04

 

Data values in other bases:

 

Hexadecimal

0

4

Binary

0000

0100

Decimal

4

 

Programming Hint: The name for this variable in code will be

IP_Flags_PING.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IP PDU> Fragment offset for the selected PING

 

Field Name: Fragment offset 

 

Purpose and Definition:  The Fragment Offset is a 13- bit field indicating where in the Ethernet frame this fragment begins.  The Fragment Offset is measured in units of 8 octets, and the first fragment has offset 0.

 

Field Key:  Not applicable

 

Data value (decimal): 0

 

Data values in other bases:

Binary: 0000

 

Programming Hint: The name for this variable in code will be

IP_Fragment Offset_PING.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IP PDU > Time to Live for the selected PING

 

Field Name: Time to Live 

 

Purpose and Definition:  Time to Live is an 8-bit field that indicates the maximum time the datagram is allowed to remain in the internet.  If this field contains the value 0, then the datagram must be destroyed.  This field is modified in internet header processing.  The time is measure in units of seconds, and is set by the sender to the maximum time the datagram is allowed to be in the internet.  This field is decreased at each point that the internet header is processed.  The intention is to cause undeliverable packets to be discarded, and to bind the maximum datagram lifetime.
 

Field Key:  Not applicable

 

Data value (decimal): 40

 

Data values in other bases:

 

Hexadecimal

2

8

Binary

0010

1000

Decimal

40

 

Programming Hint: The name for this variable in code will be

IP_TimetoLive_PING.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IP PDU> Protocol for the selected PING

 

Field Name: Protocol 

 

Purpose and Definition:  Protocol is an 8-bit field that indicates the next level protocol that is used in the data portion of the internet diagram.
 

Field Key: 

Dec Hex         Protocol                                                          Dec                 Hex     Protocol

0            00      Reserved                                                          22                    16          Multiplexing

1            01      ICMP                                                              23                    17          DCN

2            02      Unassigned                                                       24                    18          TAC Monitoring        

3            03      Gateway-to-Gateway                                       25-76               19-4C    Unassigned                

4            04      CMCC Gateway Monitoring Message  77                    4D         Any local network

5            05      ST                                                                    100                  64          SATNET and Backroom EXPAK

6            06      TCP                                                                 101                  65          MIT Subnet Support

7            07      UCL                                                                102-104           66-68     Unassigned

10          0A     Unassigned                                                       105                  69          SATNET Monitoring

11          0B      Secure                                                              106                  6A          Unassigned

12          0C     BBN RCC Monitoring                          107                  6B           Internet Packet Core Utility

13          0D     NVP                                                                110-113           6E-71    Unassigned

14          0E      PUP                                                                 114                  72           Backroom SATNET Monitoring

15          0F      Pluribus                                                            115                  73          Unassigned

16        10        Telnet                                                               116                  74           WIDEBAND Monitoring

17        11        XNET                                                              117                  75          WIDEBAND EXPAK

20        14        Chaos                                                              120-376           78-0178  Unassigned

21        15        User Datagram                                     377                  0179        Reserved

 

Data value (decimal): 01      

 

Data values in other bases:

 

Hexadecimal

0

1

Binary

0000

0001

Decimal

1

 

Programming Hint: The name for this variable in code will be IP_Protocol_PING.

IP PDU> Header Checksum for the selected PING

 

Field Name: Header Checksum 

 

Purpose and Definition:  The Header Checksum is a 16-bit field.  The Checksum is the 16-bit one’s complement sum of all 16-bit words in the header.  For purposes of computing the checksum, the initial value of its field is zero.  When both header checksums are equal, then the header bits are correct.  If either checksums vary, then a new, correct packet will need to be sent.
 

Field Key:  Not applicable

 

Data value (decimal): B8 CC

 

Data values in other bases:

 

Hexadecimal

B

8

C

C

Binary

1011

1000

1100

1100

 

Programming Hint: The name for this variable in code will be

IP_HeaderChecksum_PING.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IP PDU> Source for the selected PING

 

Field Name: Source 

 

Purpose and Definition:  The Source Address is a 32-bit field that contains the IP address of the host that sent the IP Packet.
 

Field Key:  Not applicable

 

Data value (decimal): 192.168.0.39

 

Data values in other bases:

 

Hexadecimal

C

0

A

8

0

0

2

7

Binary

1100

0000

1010

1000

0000

0000

0010

0111

Decimal

192

168

0

39

 

Programming Hint: The name for this variable in code will be

IP_Source_PING.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IP PDU > Destination for the selected PING

 

Field Name: Destination

 

Purpose and Definition:  The Destination Address is a 32-bit field that contains the address of the host that is to receive the data contained within the IP packet.
 

Field Key:  Not applicable

 

Data value (decimal): 192.168.0.101

 

Data values in other bases:

 

Hexadecimal

C

0

A

8

0

0

6

5

Binary

1100

0000

1010

1000

0000

0000

0110

0101

Decimal

192

168

0

101

 

Programming Hint: The name for this variable in code will be

Ethernet_Destination_PING.

2.2.22 ICMP PDU for the selected PING PDU

 

IP > ICMP Header > Type for the selected PING PDU

 

Field Name:  Type

 

Purpose and Definition:  The type is an 8-bit field that identifies what sort of message the ICMP protocol is sending.

 

Field Key:

Dec     Hex     Message Type                       Dec       Hex      Message Type       

0          00        Echo Reply                               16          10         Information Reply

1          01        Unassigned                               17          11         Address Mask Request

2          02        Unassigned                               18          12         Address Mask Reply

3          03        Destination Unreachable           19          13         Reserved (for Security)

4          04        Source Quench             20-29     14-1D   Reserved (for Robustness Experiment)

5          05        Redirect                                   30          1E         Traceroute

6          06        Alternate Host Address            31          1F         Datagram Conversion Error

7          07        Unassigned                               32          20         Mobile Host Redirect

8          08        Echo                                        33          21         IPv6 Where-Are-You

9          09        Router Advertisement               34          22         IPv6 I-Am-Here

10        0A       Router Solicitation                    35          23         Mobile Registration Request

11        0B        Time Exceeded             36          24         Mobile Registration Reply

12        0C       Parameter Problem                   37          25         Domain Name Request

13        0D       Timestamp                                38          26         Domain Name Reply

14        0E        Timestamp Reply                      39          27         SKIP

15        0F        Information Request                  40          28         Photuris

                                                                        41-255   29-FF Reserved

 

Data value: 8 (Echo (ping) Request)

 

Data values in other bases:

 

Hexadecimal

0

8

Binary

0000

1000

Decimal

8

 

RFC Link: http://www.iana.org/assignments/icmp-parameters

 

Programming Hint: The name for this variable in code will be IP_ICMP_Type_PING.

 

 

 

IP > ICMP Header > Code for the selected PING PDU

 

Field Name:  Code

 

Purpose and Definition: Code is an 8-bit field that provides further information about the associated type field.

Field Key:

Type     Name                                                                                                  Type     Name
  0             Echo Reply (used by “PING”)                                                       7            Unassigned 
                     0     No Code                                                                                 8            Echo (used by "PING")
  1             Unassigned                                                                                        0     No Code                                                                           
  2             Unassigned                                                                  9            Router Advertisement 
  3             Destination Unreachable                                                                                    0    No Code
                     0     Net Unreachable                                              10           Router Selection
                     1     Host Unreachable                                                                   0    No Code
                     2     Protocol Unreachable                                                          11           Time Exceeded
                     3     Port Unreachable                                                                    0    Time to Live exceeded in Transit
5         Fragmentation needed and                                                                1    Fragment Reassembly Time Exceeded
                Don't Fragment was Set                                              12            Parameter Problem
                     5     Source Route Failed                                                                                    0    Pointer indicates the error
                     6     Destination Network Unknown                                                                1    Missing a Required Option
                     7     Destination Host Unknown                                                  2    Bad Length
                     8     Source Host Isolated                                                           13           Timestamp
13      Communication with Destination                                                     0    No Code
         Network is Administratively Prohibited                  14           Timestamp Reply                   
14      Communication with Destination                                                     0    No Code
         Host is Administratively Prohibited                         15           Information Request             
15      Destination Network Unreachable                                                   0    No Code
         for Type of Service                                               16           Information Reply                    
16      Destination Host Unreachable for                                                    0    No Code
         Type of Service                                                           17           Address Mask Request       
  4            Source Quench                                                                                                        0    No Code
                     0     No Code                                                                                18           Address Mask Reply            
  5            Redirect                                                                                                                   0     No Code
                     0    Redirect Datagram for the Network                                    19           Reserved (for Security)        
                     1    Redirect Datagram for the Host                                          20-29   Reserved (for Robustness Experiment)
                     2    Redirect Datagram for the Type of                                     30        Traceroute
                             Service and Network                                                          31        Datagram Conversion Error
4         Redirect Datagram for the Type of                            32        Mobile Host Redirect
         Service and Host                                                         33        IPv6 Where-Are-You
  6            Alternate Host Address                                             34        IPv6 I-Am-Here
                     0    Alternate Address for Host                            35        Mobile Registration Request 
36        Mobile Registration Reply
       Data value (decimal): 0

 

Data values in other bases:

 

Hexadecimal

0

0

Binary

0000

0000

Decimal

0

ASCII

©

 

Programming Hint: The name for this variable in code will be IP_ICMP_Header_PING.

IP > ICMP Header > Checksum for the selected PING PDU

 

Field Name:  Checksum

 

Purpose and Definition:  The checksum is the 16-bit one’s complement of the one’s complement sum of the ICMP message, starting with the ICMP type.  For computing the checksum, the checksum field should initially be zero.

 

Field Key:  Not applicable

 

Data value (hexadecimal): C9 15

 

Data values in other bases:

 

Hexadecimal

C

9

1

5

Binary

1100

1001

0001

0101

Decimal

201

21

ASCII

á

©

 

Programming Hint: The name for this variable in code will be IP_ICMP_Checksum_PING.

IP > ICMP Header > Identifier for the selected PING PDU

 

Field Name:  Identifier

 

Purpose and Definition:  The identifier is a 16-bit field that is used in matching echoes and replies for when the code field is zero.

 

Field Key:  Not applicable

 

Data value (hexadecimal): 70 60

 

Data values in other bases:

 

Hexadecimal

7

0

6

0

Binary

0111

0000

0110

0000

Decimal

112

96

ASCII

P

‘

 

Programming Hint: The name for this variable in code will be IP_ICMP_Identifier_PING.

IP > ICMP Header > Sequence for the selected PING PDU

 

Field Name:  Sequence

 

Purpose and Definition:  The sequence is a 16-bit field that is used in matching echoes and replies for when the code field is zero.

 

Field Key:  Not applicable

 

Data value (hexadecimal): 70 60

 

Data values in other bases:

 

Hexadecimal

0

0

0

0

Binary

0000

0000

0000

0000

Decimal

0

0

ASCII

©

©

 

Programming Hint: The name for this variable in code will be IP_ICMP_Sequence_PING.

IP > ICMP Header > Data for the selected PING PDU

 

Field Name:  Data

 

Purpose and Definition:  The data is a variable-length field that contains the actual information that is sent in the ping packet.

 

Field Key:  Not applicable

 

Data value (hexadecimal): 00 01 03 1E E2 24 00 00 F8 1F 00 85 08 00 45 00 00 54 00 00 40 00 40 01 B8 CC C0 A8 00 27 C0 A8 00 65 08 00 C9 15 70 60 00 00 42 B1 89 3F 00 00 00 00 2C C6 07 00 00 00 00 00 10 11 12 13 14 15 26 27 28 29 2A 2B 2C 2D 2E 2F 30 31 32 33 34 35 36 37

Data values in other bases:

 

Hexadecimal

0

0

0

1

0

3

1

E

E

2

Binary

0000

0000

0000

0000

000

0011

0001

1110

1110

0010

Decimal

0

1

3

30

226

ASCII

ă

ă

ă

ă

á

 

Hexadecimal

2

4

0

0

0

0

F

8

1

F

Binary

0010

0100

0000

0000

0000

0000

1111

1000

0001

1111

Decimal

36

0

0

242

31

ASCII

$

©

©

á

ă

 

Hexadecimal

0

0

8

5

0

8

0

0

4

5

Binary

0000

0000

1000

0101

0000

1000

0000

0000

0100

0101

Decimal

0

133

8

0

69

ASCII

©

á

©

©

E

 

Hexadecimal

0

0

0

0

5

4

0

0

0

0

Binary

0000

0000

0000

0000

0101

0100

0000

0000

0000

0000

Decimal

0

0

84

0

0

ASCII

©

©

T

©

©

 

Hexadecimal

4

0

0

0

4

0

0

1

B

8

Binary

0100

0000

0000

0000

0100

0000

0000

0001

1011

1000

Decimal

64

0

64

1

184

ASCII

@

©

@

©

á

 

Hexadecimal

C

C

C

0

A

8

0

0

2

7

Binary

1100

1100

1100

0000

1010

1000

0000

0000

0010

0111

Decimal

204

192

168

0

39

ASCII

á

á

á

©

          ‘

 

Hexadecimal

C

0

A

8

0

0

6

5

0

8

Binary

1100

0000

1010

1000

0000

0000

0110

0101

0000

1000

Decimal

192

168

0

101

8

ASCII

á

á

ă

e

ă

 

Hexadecimal

0

0

C

9

1

5

7

0

6

0

Binary

0000

0000

1100

1001

0001

0101

0111

0000

0110

0000

Decimal

0

201

21

112

96

ASCII

ă

á

ă

p

‘’

 

Hexadecimal

0

0

0

0

4

2

b

1

8

9

Binary

0000

0000

0000

0000

0100

0010

1011

0001

1000

1001

Decimal

0

0

66

177

137

ASCII

ă

ă

B

á

á

 

Hexadecimal

3

F

0

0

0

0

0

0

0

0

Binary

0011

1111

0000

0000

0000

0000

0000

0000

0000

0000

Decimal

63

0

0

0

0

ASCII

?

ă

ă

ă

ă

 

Hexadecimal

2

C

c

6

0

7

0

0

0

0

Binary

0010

1100

1100

0110

0000

0111

0000

0000

0000

0000

Decimal

44

198

7

0

0

ASCII

,

á

ă

ă

ă

 

Hexadecimal

0

0

0

0

0

0

1

0

1

1

Binary

0000

0000

0000

0000

0000

0000

0001

0000

0001

0001

Decimal

0

0

0

16

17

ASCII

ă

ă

ă

ă

ă

 

Hexadecimal

1

2

1

3

1

4

1

5

2

6

Binary

0001

0010

0001

0011

0001

0100

0001

0101

0010

0110

Decimal

18

19

20

21

38

ASCII

ă

ă

ă

ă

&

 

Hexadecimal

2

7

2

8

2

9

2

A

2

B

Binary

0010

0111

0001

1000

0010

1001

0010

1010

0010

1011

Decimal

39

40

41

42

43

ASCII

‘

(

)

*

+

 

Hexadecimal

2

C

2

F

3

0

3

1

3

2

Binary

0010

1100

0010

111

0011

0000

0011

0001

0011

0010

Decimal

44

47

48

49

50

ASCII

,

/

0

1

2

Hexadecimal

3

3

3

4

3

5

3

6

3

7

Binary

0011

0011

0011

0100

0000

0101

0011

0110

0011

0111

Decimal

51

52

53

54

55

ASCII

3

4

5

6

7

 

 

 Programming Hint: The name for this variable in code will be IP_ICMP_Data_PING.

2.2.23 IP PDU for the selected HTTP PDU

 

IP PDU > IP Version for the selected HTTP PDU

 

Field Name: IP Version

 

Purpose and Definition:  Version is a 4-bit field that indicates the format of the internet header.

 

Field Key:       4 = IPv4

            6 = IPv6

 

Data value (decimal):  4

 

Data values in other bases:

 

Hexadecimal

4

Binary

0100

Decimal

4

 

Programming hint: The name for this variable in code will be IP_Version_HTTP.

IP PDU> Internet Header Length for the selected HTTP PDU

 

Field Name:  Internet Header Length

 

Purpose and Definition:  The IHL field is a 4-bit field indicating the length of the internet header in 32 bit words, and thus points to the beginning of the data.  The minimum value of a correct header is 5.

 

Field Key:  Not applicable

 

Data value:  The value contained in our field is 20 bytes.  This is the hexadecimal and decimal value of 5 multiplied by 4 bits.

 

Data values in other bases:

 

Hexadecimal

0

5

Binary

0000

0101

Decimal

5

 

Programming hint: The name for this variable in code will be IP_IHL_HTTP.

IP PDU > Type of Service for the selected HTTP PDU

 

Field Name:  Type of Service

 

Purpose and Definition:  Type of Service is an 8-bit field that provides and indication of the abstract parameters of the quality of service desired.  These parameters guide the selection of the actual service parameters when transmitting a datagram through a particular network.

 

Field Key:  The major choice is a three-way tradeoff between low-delay, high-reliability, and high-throughput.

 

 

 

 


Bits 0-2: Precedence

Bit 3: (D)  0 = Normal Delay                1 = Low Delay

Bit 4: (T)  0 = Normal Throughput        1 = High Throughput

Bit 5: (R)  0 = Normal Reliability           1 = High Reliability

 

Precedence:

            111 = Network Control                        011 = Flash

            110 = Internetwork Control                  010 = Immediate

            101 = CRITIC/ECP                             001 = Priority

            100 = Flash Overrided             000 = Routine

 

Data value (hexadecimal): 00

 

Data values in other bases:

 

Hexadecimal

0

0

Binary

0000

0000

Decimal

00

 

Programming hint: The name for this variable in code will be IP_TypeOfService_HTTP.

IP PDU > Total Length of Ethernet Frame for the selected HTTP PDU

 

Field Name: Total Length of Ethernet Frame

 

Purpose and Definition: Total Length is a 16-bit field that indicates the length of the frame, measured in octets, including internet header and data.  The maximum size is 216-1 or 65,535 octets; however, the recommended maximum size is 576 octets.

 

Field Key:  Not applicable

 

Data values (hexadecimal):  570

 

Data values in other bases:

 

Hexadecimal

0

2

3

A

Binary

0000

0010

0011

1010

Decimal

2

58

ASCII

©

:

 

Programming hint: The name for this variable in code will be IP_TotalLength_HTTP.

IP PDU > Identification for the selected HTTP PDU

 

Field Name:  Identification

 

Purpose and Definition:  Identification is a 16-bit field.  An identifying value is assigned by the sender to aid in assembling the fragments of a datagram.  The identifier is chosen based on the need to provide a way to uniquely identify the fragments and protocol for the time the datagram or any fragment could be alive in the internet.

 

Field Key:  Not applicable

 

Data value (hexadecimal): 3C 05

 

Data values in other bases:

 

Hexadecimal

3

C

0

5

Binary

0011

1100

0000

0101

 

Programming hint: The name for this variable in code will be IP_Identification_HTTP,

IP PDU > Flags for the selected HTTP PDU

 

Field Name:  Flags

 

Purpose and Definition:  Flags is a 3-bit field that indicates directions for fragmentation.

 

Field Key:

Bit 0: reserved, must be 0

Bit 1: (DF)  0 = May Fragment             1 = Don’t Fragment

Bit 2: (MF) 0 = Last Fragment              1 = More Fragment

 

Data value (binary): 010

 

Data values in other bases:  Not applicable

 

Programming hint: The name for this variable in code will be IP_Flags_HTTP.

IP PDU > Fragment Offset for the selected HTTP PDU

 

Field Name:  Fragment Offset

 

Purpose and Definition:  The Fragment Offset is a 13- bit field indicating where in the Ethernet frame this fragment begins.  The Fragment Offset is measured in units of 8 octets, and the first fragment has offset 0.

 

Field Key:  Not applicable

 

Data value (decimal): 0

 

Data values in other bases:

Binary: 0 0000 0000 0000

 

Programming hint: The name for this variable in code will be IP_FragmentOffset_HTTP.

 

 

IP PDU > Time to Live for the selected HTTP PDU

 

Field Name: Time to Live

 

Purpose and Definition:  Time to Live is an 8-bit field that indicates the maximum time the datagram is allowed to remain in the internet.  If this field contains the value 0, then the datagram must be destroyed.  This field is modified in internet header processing.  The time is measure in units of seconds, and is set by the sender to the maximum time the datagram is allowed to be in the internet.  This field is decreased at each point that the internet header is processed.  The intention is to cause undeliverable packets to be discarded, and to bound the maximum datagram lifetime.

 

Field Key:  Not applicable

 

Data value (decimal): 64

 

Data values in other bases:

 

Hexadecimal

4

0

Binary

0100

0000

Decimal

64

 

Programming hint: The name for this variable in code will be IP_TimeToLive_HTTP.

 

 

IP PDU > Protocol for the selected HTTP PDU

 

Field Name:  Protocol

 

Purpose and Definition:  Protocol is an 8-bit field that indicates the next level protocol that is used in the data portion of the internet diagram.

 

Field Key:

Dec Hex            Protocol                                                          Dec                 Hex     Protocol

0               0        Reserved                                                          22                    16        Multiplexing

1               1        ICMP                                                              23                    17        DCN

2   2        Unassigned                                                       24                    18        TAC Monitoring         

3               3        Gateway-to-Gateway                                       25-76               19-4C  Unassigned                 

4               4        CMCC Gateway Monitoring Message  77                    4D       Any local network

5            5        ST                                                                    100                  64        SATNET and Backroom EXPAK

6            6        TCP                                                                 101                  65        MIT Subnet Support

7   7        UCL                                                                102-104           66-68   Unassigned

10             A       Unassigned                                                       105                  69        SATNET Monitoring

11             B        Secure                                                              106                  6A       Unassigned

12             C       BBN RCC Monitoring                          107                  6B        Internet Packet Core Utility

13             D       NVP                                                                110-113           6E-71  Unassigned

14             E        PUP                                                                 114                  72        Backroom SATNET Monitoring

15          F        Pluribus                                                            115                  73        Unassigned

16        10       Telnet                                                               116                  74        WIDEBAND Monitoring

17        11       XNET                                                              117                  75        WIDEBAND EXPAK

20        14       Chaos                                                              120-376           78-178  Unassigned

21           15       User Datagram                                     377                  179        Reserved

 

Data value (hexadecimal): 06

 

Data values in other bases:

 

Hexadecimal

0

6

Binary

0000

0110

Decimal

6

 

RFC Link: http://www.faqs.org/rfcs/rfc790.html

 

Programming hint: The name for this variable in code will be IP_Protocol_HTTP.

 

IP PDU > Header Checksum for the selected HTTP PDU

 

Field Name:  Header Checksum

 

Purpose and Definition:  The Header Checksum is a 16-bit field.  The Checksum is the 16-bit one’s complement sum of all 16-bit words in the header.  For purposes of computing the checksum, the initial value of its field is zero.  When both header checksums are equal, then the header bits are correct.  If either checksums vary, then a new, correct packet will need to be sent.

 

This is a simple way to compute the checksum and experimental evidence indicates that it is adequate, but it is provisional and may be replaced by a CRC procedure, depending on further experience.

 

Field Key:  Not applicable

 

Data value (hexadecimal): 7A F7

 

Data values in other bases:

 

Hexadecimal

7

A

5

7

Binary

0111

1010

0101

0111

 

Programming hint: The name for this variable in code will be IP_HeaderChecksum_HTTP.

IP PDU > Source Address for the selected HTTP PDU

 

Field Name:  Source Address

 

Purpose and Definition:  The Source Address is a 32-bit field that contains the IP address of the host that sent the IP Packet.

 

Field Key:  Not applicable

 

Data value (decimal):  192.168.0.12

 

Data values in other bases:

 

Hexadecimal

C

0

A

8

0

0

0

C

Binary

1100

0000

1010

1000

0000

0000

0000

1100

Decimal

192

168

0

12

 

Programming hint: The name for this variable in code will be IP_SourceAddress_HTTP.

IP PDU > Destination Address for the selected HTTP PDU

 

Field Name:  Destination Address

 

Purpose and Definition:  The Destination Address is a 32-bit field that contains the address of the host that is to receive the data contained within the IP packet.

 

Field Key: Not applicable

 

Data value (decimal):  192.168.0.101

 

Data values in other bases:

 

Hexadecimal

C

0

A

8

0

0

6

5

Binary

1100

0000

1010

1000

0000

0000

0110

0101

Decimal

192

168

0

101

 

Programming hint: The name for this variable in code will be IP_DestinationAddress_HTTP.

IP PDU > Options and Padding for the selected HTTP PDU

 

Field Name:  Options and Padding

 

Purpose and Definition:  The options may or may not appear in Ethernet packets.  They must be implemented by all IP modules (host and gateways).  What is optional is their transmission in any particular packet, not their implementation.

 

The option field is variable in length.  There may be zero or more options.  There are two cases for the format of an option.

            Case 1: A single octet of option type

            Case 2: An option-type octet, an option-length octet, and the actual option-data                                    octets.

 

Field Key:  Not applicable

 

Data values:  Not applicable

 

Data values in other bases:  Not applicable

 

Programming hint: The name for this variable in code will be IP_OptionsPadding_HTTP.

IP PDU > Data for the selected HTTP PDU

 

Field Name:  Data

 

Purpose and Definition:  The Data is a variable length field which contains the actual data that is being sent from one host to another.  The data field may start with a Layer 4 header, which will give additional instructions to the application that will be receiving the data; alternately, it may be an ICMP header and not contain any user data at all.

 

Field Key:  Not applicable

 

Data values (hexadecimal) :  (TCP) 80 30 00 15 81 A5 16 6C 87 A3 53 5D 80 18 16 D0 11 F4 00 00 01 01 08 0A 1B 25 F3 A1 0b DD 73 58

(FTP) 50 41 53 53 20 66 31 61 32 6B 33 75 73 65 72 0D 0A

 

Data values in other bases:

Hexadecimal: (TCP) 0 x 80 30 00 15 81 A5 16 6C 87 A3 53 5D 80 18 16 D0 11 F4 00 00 01 01 08 0A 1B 25 F3 A1 0B DD 73 58

(FTP) 50 41 53 53 20 66 31 61 32 6B 33 75 73 65 72 0D 0A

 

ASCII:  (TCP) ↑ 0 © © ↑ ↑ © ↑ ↑ S ] ↑ © © ↑ © ↑ © © © © © © © % ↑ ↑ © ↑ s X

(FTP) P A S S S © f 1 a 2 k 3 u s e r © ©

 

Programming hint: The name for this variable in code will be IP_Data_HTTP.

2.2.24 TCP PDU for the selected HTTP PDU

 

IP > TCP PDU > Source Port for the selected HTTP PDU

 

Field Name:  Source Port

 

Purpose and Definition:

This 16-bit number represents the name of the application that sent the data in the IP packet.

 

Field Key:  Not applicable

 

Data value: www (80)

 

Data values in other bases:

 

Hexadecimal

0

0

5

0

Binary

0000

0000

0101

0000

Decimal

0

80

ASCII

©

P

 

Programming hint: The name for this variable in code will be IP_TCP_SourcePort_HTTP.

IP > TCP PDU > Destination Port for the selected HTTP PDU

 

Field Name: Destination Port

 

Purpose and Definition:
This 16-bit number represents the name of the application that is to receive the data contained within the IP packet. This is one of the major differences between a Layer 3 and a Layer 4 header: the Layer 3 header contains the IP address of the computer that is to receive the IP packet; once that packet has been received, the port address in the Layer 4 header ensures that the data contained within that IP packet is passed to the correct application on that computer.

 

Field Key:

This key indicates assigned port number values:

Dec                       Port Numbers

0                                            Reserved
1-32767                 Internet registered ("well-known") protocols
32768-98303         Reserved, to allow TCPv7-TCPv4 conversion
98304 & up            Dynamic assignment

 

Data value (decimal): 4255

 

Data values in other bases:

 

Hexadecimal

1

0

9

F

Binary

0001

0000

1001

1111

Decimal

16

159

ASCII

©

á

 

Source: http://www.zvon.org/tmRFC/RFC1475/Output/chapter4.html

 

Programming hint: The name for this variable in code will be IP_TCP_DestinationPort_HTTP.

IP > TCP PDU > Sequence Number for the selected HTTP PDU

 

Field Name:  Sequence Number

 

Purpose and Definition:
TCP is responsible for ensuring that all IP packets sent are actually received. When an application's data is packaged into IP packets, TCP will give each IP packet a sequence number. Once all the packets have arrived at the receiving computer, TCP uses the number in this 32-bit field to ensure that all of the packets actually arrived and are in the correct sequence.

 

Field Key:  Not applicable

 

Data value (decimal): 988014608

 

Data values in other bases:

 

Hexadecimal

3

A

E

3

E

8

1

0

Binary

0011

1010

1110

0011

1110

1000

0001

0000

Decimal

58

227

232

16

ASCII

:

á

á

©

 

Programming hint: The name for this variable in code will be IP_TCP_SequenceNumber_HTTP.

IP > TCP PDU > Acknowledgement Number for the selected HTTP PDU

 

Field Name: Acknowledgement Number

Purpose and Definition:
This number is used by the receiving computer to acknowledge which packets have successfully arrived. This number will be the sequence number of the next packet the receiver is ready to receive.

Field Key:  Not applicable

 

Data value: 1398299764

 

Data values in other bases:

 

Hexadecimal

5

3

5

8

5

C

7

4

Binary

0101

0011

0101

0111

0101

1010

0111

0100

Decimal

83

88

92

116

ASCII

S

X

\

t

 

Programming hint: The name for this variable in code will be IP_TCP_AcknowledgmentNumber_HTTP.

IP > TCP PDU > Header Length or Offset for the selected HTTP PDU

 

Field Name:  Header Length or Offset

 

Purpose and Definition:
This is identical in concept to the header length in an IP packet, except this time it indicates the length of the TCP header.

 

Field Key:  Not applicable

Data value (bytes): 32

Data values in other bases:

 

Hexadecimal

8

0

Binary

1000

0000

Decimal

128

ASCII

á

 

Programming hint: The name for this variable in code will be IP_TCP_IHL_HTTP.

IP > TCP PDU > Control Flags for the selected HTTP PDU

 

Field Name:  Control Flags

 

Purpose and Definition:
Every TCP packet contains this 6-bit value that indicates how many octets it can receive at once. When IP packets are received, they are placed in a temporary area of RAM known as a buffer until the receiving computer has a chance to process them; this value represents how big a buffer the receiving host has made available for this temporary storage of IP packets.

 

Field Key:

 

Data value (binary): 01 1000

 

Data values in other bases:  Not applicable

 

Programming hint: The name for this variable in code will be IP_TCP_Flags_HTTP.

IP > TCP PDU > Window Size for the selected HTTP PDU

 

Field Name:  Window Size

Purpose and Definition:
Every TCP packet contains this 16-bit value that indicates how many octets it can receive at once. When IP packets are received, they are placed in a temporary area of RAM known as a buffer until the receiving computer has a chance to process them; this value represents how big a buffer the receiving host has made available for this temporary storage of IP packets.

 

Field Key:  Not applicable

 

Data value (decimal): 7504

 

Data values in other bases:

 

Hexadecimal

1

D

5

0

Binary

0001

1101

0101

0000

Decimal

29

80

ASCII

©

P

 

Programming hint: The name for this variable in code will be IP_TCP_WindowSize_HTTP.

IP > TCP PDU > Urgent Pointer for the selected HTTP PDU

Field Name: Urgent Pointer

Purpose and Definition:
If the Urgent flag is set to on, this value indicates where the urgent data is located.

Information Key:  Not applicable

 

Data value:  Not applicable

 

Data values in other bases:  Not applicable

 

Programming hint: The name for this variable in code will be IP_TCP_UrgentPointer_HTTP.

IP > TCP PDU > Checksum for the selected HTTP PDU

 

Field Name:  Checksum

 

Purpose and Definition:
Unlike IP, TCP is responsible for ensuring that the entire IP packet arrived intact. TCP will run a CRC on the entire IP packet (not just the header) and place the resulting checksum in this field. When the IP packet is received, TCP re-runs the CRC on the entire packet to ensure the checksum is the same.

 

Field Key:  Not applicable

 

Data value (hexadecimal): F0 F6

 

Data values in other bases:

 

Hexadecimal

F

0

F

6

Binary

1111

0000

1111

0110

Decimal

240

246

ASCII

á

á

 

Programming hint: The name for this variable in code will be IP_TCP_Checksum_HTTP.

IP > TCP PDU > Options and Padding for the selected HTTP PDU

 

Field Name: Options and Padding

 

Purpose and Definition:
Like IP options, this field is optional and represents additional instructions not covered in the other TCP fields. Again, if an option does not fill up a 32-bit word, it will be filled in with padding bits.

 

Field Key:  Not applicable

 

Data value (hexadecimal): 08 0A 39 22 DB 5B 06 2F 44 96

 

Data values in other bases:

 

Hexadecimal

0

8

0

A

3

9

2

2

D

B

Binary

0000

1000

0000

1010

0011

1001

0010

0010

1101

1011

Decimal

8

10

57

34

219

ASCII

©

©

9

“

á

 

 

Hexadecimal

5

B

0

6

2

F

4

4

9

6

Binary

0101

1011

0000

0110

0010

1111

0100

0100

1001

0110

Decimal

91

6

47

68

150

ASCII

[

©

/

F

á

 

Programming hint: The name for this variable in code will be IP_TCP_Options_HTTP.

2.2.25 HTTP PDU for the selected HTTP PDU

 

IP > TCP > HTTP PDU > Content Type for the selected HTTP PDU

 

Field Name: Content Type

 

Purpose and Definition: The Content-Type entity-header field indicates the media type of the Entity-Body sent to the recipient.
 

Field Key:  Not applicable

 

Data value (ASCII): text/html; charset=iso – 8859-1\r\n

 

Data values in other bases:

 

Hexadecimal

4

3

6

F

6

E

7

4

Binary

0100

0011

0110

1111

0110

1110

0111

0100

Decimal

67

111

110

116

ASCII

C

o

n

t

 

Hexadecimal

6

5

6

E

7

4

2

D

Binary

0110

0101

0110

1110

0111

0100

0010

1101

Decimal

101

110

116

45

ASCII

e

n

t

-

 

Hexadecimal

5

4

7

9

7

0

6

5

Binary

0101

0100

0111

1001

0111

0000

0110

0101

Decimal

84

121

112

101

ASCII

T

y

p

e

 

Hexadecimal

3

A

2

0

7

4

6

5

Binary

0110

1010

0010

0000

0111

0100

0110

0101

Decimal

58

32

116

101

ASCII

:

 

t

e

 

Hexadecimal

7

8

7

4

2

F

6

8

Binary

0111

1000

0111

0100

0010

1111

0110

1000

Decimal

120

116

47

104

ASCII

x

t

/

h

 

Hexadecimal

7

4

6

D

6

C

3

B

Binary

0111

0100

0110

1101

0110

1100

0011

1011

Decimal

116

109

108

59

ASCII

t

m

l

;

 

 

 

Hexadecimal

2

0

6

3

6

8

6

1

Binary

0010

0000

0110

0011

0110

1000

0110

0001

Decimal

32

99

104

97

ASCII

 

c

h

a

 

Hexadecimal

7

2

7

3

6

5

7

4

Binary

0111

0010

0111

0011

0110

0101

0111

0100

Decimal

114

115

101

116

ASCII

r

s

e

t

 

Hexadecimal

3

D

6

9

7

3

6

F

Binary

0011

1101

0110

1001

0111

0011

0110

1111

Decimal

61

105

115

111

ASCII

=

i

s

o

 

Hexadecimal

2

D

3

8

3

8

3

5

Binary

0010

1101

0011

1000

0011

1000

0011

0101

Decimal

45

56

56

53

ASCII

-

8

8

5

 

Hexadecimal

3

9

2

D

3

1

0

D

Binary

0011

1001

0010

1101

0011

0001

0000

1101

Decimal

57

45

49

13

ASCII

9

-

1

\r

 

Hexadecimal

0

A

Binary

0000

1010

Decimal

10

ASCII

\n

 

Programmer’s Hint: The name for this variable in code will be IP_TCP_HTTP_Content-Type_HTTP.

IP > TCP > HTTP PDU > Date for the selected HTTP PDU

 

Field Name: Date

 

Purpose and Definition: This field contains the date and time on which the web page was accessed.
 

Field Key:  Not applicable

 

Data value (ASCII): Date: Tue, 03 Feb 2004 23:08:10 GMT\r\n

 

Data values in other bases:

 

Hexadecimal

4

6

6

1

7

4

6

5

Binary

0110

0110

0110

0001

0111

0100

0110

0101

Decimal

70

97

116

101

ASCII

D

a

t

e

 

Hexadecimal

3

A

2

0

5

4

7

5

Binary

0010

1010

0010

0000

0101

0100

0111

0101

Decimal

58

32

84

117

ASCII

:

 

T

u

 

 

Hexadecimal

6

5

2

C

2

0

3

0

Binary

0110

0101

0010

1100

0010

0000

0011

0000

Decimal

101

44

32

48

ASCII

e

,

 

0

 

Hexadecimal

3

3

2

0

4

6

6

5

Binary

0011

0011

0010

0000

0100

0110

0110

0101

Decimal

 

 

 

 

ASCII

3

 

F

e

 

Hexadecimal

6

2

2

0

3

2

3

0

Binary

0110

0010

0010

0000

0011

0010

0011

0000

Decimal

98

32

50

48

ASCII

b

 

2

0

 

Hexadecimal

3

0

3

4

3

2

3

3

Binary

0011

0000

0011

0100

0011

0010

0011

0011

Decimal

48

52

50

51

ASCII

0

4

2

3

 

 

 

Hexadecimal

3

A

3

0

3

8

3

A

Binary

0011

1010

0011

0000

0011

1000

0011

1010

Decimal

58

48

56

58

ASCII

:

0

8

:

 

Hexadecimal

3

1

3

0

2

0

4

7

Binary

0011

0001

0011

0000

0010

0000

0100

0111

Decimal

49

48

32

71

ASCII

1

0

 

G

 

 

Hexadecimal

4

D

5

4

0

D

0

A

Binary

0100

1101

0101

0100

0000

1101

0000

1010

Decimal

77

84

13

10

ASCII

M

T

\r

\n

 

Programmer’s Hint: The name for this variable in code will be IP_TCP_HTTP_Date_HTTP.

IP > TCP > HTTP PDU > HTTP for the selected HTTP PDU

 

Field Name: HTTP

 

Purpose and Definition: This field displays the category of the page that is being displayed.
 

Field Key:  Not applicable

 

Data value (ASCII): HTTP/1.1 404 Not Found\r\n

 

Data values in other bases:

 

Hexadecimal

4

8

5

4

5

4

5

0

Binary

0100

1000

0101

0100

0101

0100

0101

0000

Decimal

72

84

84

80

ASCII

H

T

T

P

 

Hexadecimal

2

F

3

1

2

E

3

1

Binary

0010

1111

0011

0001

0010

1110

0011

0001

Decimal

47

49

46

49

ASCII

/

1

.

1

 

Hexadecimal

2

0

3

4

3

0

3

4

Binary

0010

0000

0011

0100

0011

0000

0011

0100

Decimal

32

52

48

52

ASCII

 

4

0

4

 

Hexadecimal

2

0

4

E

6

F

7

4

Binary

0010

0000

0100

1110

0110

1111

0111

0100

Decimal

32

78

111

116

ASCII

 

N

o

t

 

Hexadecimal

2

0

4

6

6

F

7

5

Binary

0010

0000

0100

0110

0110

1111

0111

0101

Decimal

32

70

111

117

ASCII

 

F

o

u

 

Hexadecimal

6

E

6

4

0

D

0

A

Binary

0110

1110

0110

0100

0000

1101

0000

1010

Decimal

110

100

13

10

ASCII

n

d

\r

\n

 

Programmer’s Hint: The name for this variable in code will be IP_TCP_HTTP_HTTP_HTTP.

IP > TCP > HTTP PDU > Server for the selected HTTP PDU

 

Field Name: Server

 

Purpose and Definition: The Server response-header field contains information about the software used by the origin server to handle the request.
 

Field Key:  Not applicable

 

Data value (ASCII): Server: Apache/1.3.24 (Unix) PHP/4.2.1\r\n

 

Data values in other bases:

 

Hexadecimal

5

3

6

5

7

2

7

6

Binary

0101

0011

0110

0101

0111

0010

0111

0110

Decimal

83

101

114

118

ASCII

S

e

r

v

 

Hexadecimal

6

5

7

2

3

A

2

0

Binary

0110

0101

0111

0010

0011

1010

0010

0000

Decimal

101

114

58

32

ASCII

e

r

:

 

 

 

Hexadecimal

4

1

7

0

6

1

6

3

Binary

0110

0001

0111

0000

0110

0001

0110

0011

Decimal

65

112

97

99

ASCII

A

p

a

c

 

Hexadecimal

6

8

6

5

2

F

3

1

Binary

0110

1000

0110

0101

0010

1111

0011

0001

Decimal

104

101

47

49

ASCII

h

e

/

1

 

Hexadecimal

2

E

3

3

2

E

3

2

Binary

0010

1110

0011

0011

0010

1110

0011

0010

Decimal

46

51

46

50

ASCII

.

3

.

2

 

Hexadecimal

3

4

2

0

2

8

5

5

Binary

0011

0100

0010

0000

0010

1000

0101

0101

Decimal

52

32

40

85

ASCII

4

 

(

U

 

 

 

Hexadecimal

6

E

6

9

7

8

2

9

Binary

0110

1110

0110

1001

0111

1000

0010

1001

Decimal

110

105

120

41

ASCII

n

i

x

)

 

Hexadecimal

2

0

5

0

4

8

5

0

Binary

0010

0000

0101

0000

0100

1000

0101

0000

Decimal

32

80

72

80

ASCII

 

P

H

P

 

 

Hexadecimal

2

5

3

4

2

E

3

2

Binary

0010

0101

0011

0100

0010

1110

0011

0010

Decimal

37

52

46

50

ASCII

/

4

.

2

 

Hexadecimal

2

E

3

1

0

D

0

A

Binary

0010

1110

0011

0001

0000

1101

0000

1010

Decimal

46

49

13

10

ASCII

.

1

\r

\n

 

Programmer’s Hint: The name for this variable in code will be IP_TCP_HTTP_Server_HTTP.

 

 

IP > TCP > HTTP PDU > Data for the selected HTTP PDU

 

Field Name: Data

 

Purpose and Definition: This field stores the information that is actually contained in the HTTP Protocol.
 

Field Key:  Not applicable

 

Data value (ASCII): <!DOCTYPE HTML PUBLIC “-//IETF//DTD HTML 2.0//EN”>\n

<HTML><HEAD>\n

<TITLE>404 Not Found</TITLE>\n

</HEAD><BODY>\n

<H1>Not Found</H1>\n

The requested URL /~csis410/2003/bluetech/Requirements Speicfication Document Final-files/image002.gif was not found on this server.<p>\n

<HR>\n

<ADDRESS>Apache/1.3.24 Server at ares.cs.siena.edu Port 80</ADDRESS>\n

</BODY></HTML>\n

 

Data values in other bases:

 

Hexadecimal

3

C

2

1

4

4

4

5

Binary

0011

1100

0010

0001

0100

0100

0100

0101

Decimal

60

33

68

69

ASCII

<

!

D

O

 

Hexadecimal

4

3

5

4

5

9

5

0

Binary

0100

0011

0101

0100

0101

1001

0101

0000

Decimal

67

84

89

80

ASCII

C

T

Y

P

 

Hexadecimal

4

5

2

0

4

8

5

4

Binary

0100

0101

0010

0000

0100

1000

0101

0100

Decimal

69

32

72

84

ASCII

E

 

H

T

 

Hexadecimal

4

D

4

C

2

0

5

0

Binary

0100

1101

0110

1100

0010

0000

0101

0000

Decimal

77

76

32

80

ASCII

M

L

 

P

 

Hexadecimal

5

5

4

2

4

C

4

9

Binary

0101

0101

0100

0010

0100

1100

0100

1001

Decimal

85

66

76

73

ASCII

U

B

L

I

Hexadecimal

4

3

2

0

2

2

2

D

Binary

0100

0011

0010

0000

0010

0010

0010

1101

Decimal

67

32

34

45

ASCII

C

 

“

-

 

Hexadecimal

2

F

2

F

4

9

4

5

Binary

0010

1111

0010

1111

0100

1001

0100

0101

Decimal

47

47

73

69

ASCII

/

/

I

E

 

Hexadecimal

5

4

4

6

2

F

2

F

Binary

0101

0100

0100

0110

0010

1111

0010

1111

Decimal

84

70

47

47

ASCII

T

F

/

/

 

Hexadecimal

4

4

5

4

4

4

2

0

Binary

0100

0100

0101

0100

0100

0100

0010

0000

Decimal

68

84

68

32

ASCII

D

T

D

 

 

Hexadecimal

4

8

5

4

4

D

4

C

Binary

0100

1000

0101

0100

0100

1101

0100

1100

Decimal

72

84

77

76

ASCII

H

T

M

L

 

Hexadecimal

2

0

3

2

2

E

3

0

Binary

0010

0000

0011

0010

0010

1110

0011

0000

Decimal

32

50

46

48

ASCII

 

2

.

0

 

Hexadecimal

2

F

2

F

4

5

4

E

Binary

0010

1111

0010

1111

0100

0101

0100

1110

Decimal

47

47

69

78

ASCII

/

/

E

N

 

Hexadecimal

2

2

3

E

0

A

3

C

Binary

0010

0010

0011

1110

0000

1010

0011

1100

Decimal

34

62

10

60

ASCII

“

>

\n

<

 

Hexadecimal

4

8

5

4

4

D

4

C

Binary

0100

1000

0101

0100

0100

1101

0100

1100

Decimal

72

84

77

76

ASCII

H

T

M

L

 

Hexadecimal

3

E

3

C

4

8

4

5

Binary

0011

1110

0011

1100

0100

1000

0100

0101

Decimal

62

60

72

69

ASCII

>

<

H

E

 

Hexadecimal

4

1

4

4

3

E

0

A

Binary

0100

0001

0100

0100

0011

1110

0000

1010

Decimal

65

68

62

10

ASCII

A

D

>

\n

 

Hexadecimal

3

C

5

4

4

9

5

4

Binary

0011

1100

0101

0100

0100

1001

0101

0100

Decimal

60

84

73

84

ASCII

<

T

I

T

 

Hexadecimal

4

C

4

5

3

E

3

4

Binary

0100

1100

0100

0101

0011

1110

0011

0100

Decimal

76

69

62

52

ASCII

L

E

>

4

 

Hexadecimal

3

0

3

4

2

0

4

E

Binary

0011

0000

0011

0100

0010

0000

0100

1110

Decimal

48

52

32

78

ASCII

0

4

 

N

 

Hexadecimal

6

F

7

4

2

0

4

6

Binary

0110

1111

0111

0100

0010

0000

0100

0110

Decimal

111

116

32

70

ASCII

o

t

 

F

 

Hexadecimal

6

F

7

5

6

E

6

4

Binary

0110

1111

0111

0101

0110

1110

0110

0100

Decimal

111

117

110

100

ASCII

o

u

n

d

 

Hexadecimal

3

C

2

F

5

4

4

9

Binary

0011

1100

0010

1111

0101

0100

0100

1001

Decimal

60

47

84

73

ASCII

<

/

T

I

 

Hexadecimal

5

4

4

C

4

5

3

E

Binary

0101

0100

0100

1100

0100

0101

0011

1110

Decimal

84

76

69

62

ASCII

T

L

E

>

 

Hexadecimal

0

A

3

C

2

F

4

8

Binary

0000

1010

0011

1100

0010

1111

0100

1000

Decimal

10

60

47

72

ASCII

\n

<

/

H

 

Hexadecimal

4

5

4

1

4

4

3

E

Binary

0100

0101

0100

0001

0100

0100

0011

1110

Decimal

69

65

68

62

ASCII

E

A

D

>

 

Hexadecimal

3

C

4

2

4

F

4

4

Binary

0011

1100

0100

0010

0100

1111

0100

0100

Decimal

60

66

79

68

ASCII

<

B

O

D

 

Hexadecimal

5

9

3

E

0

A

3

C

Binary

0101

1001

0011

1110

0000

1010

0011

1100

Decimal

89

62

10

60

ASCII

Y

>

\n

<

 

Hexadecimal

4

8

3

1

3

E

4

E

Binary

0100

1000

0011

0001

0011

1110

0100

1110

Decimal

72

49

62

78

ASCII

H

1

>

N

 

Hexadecimal

6

F

7

4

2

0

4

6

Binary

0110

1111

0111

0100

0010

0000

0100

0110

Decimal

111

116

32

70

ASCII

o

t

 

F

 

Hexadecimal

6

F

7

5

6

E

6

4

Binary

0100

1111

0111

0101

0110

1110

0110

0100

Decimal

111

117

110

100

ASCII

o

u

n

d

 

Hexadecimal

3

C

2

F

4

8

3

1

Binary

0011

1100

0010

1111

0100

1000

0011

0001

Decimal

60

47

72

49

ASCII

<

/

H

1

 

Hexadecimal

3

E

0

A

5

4

6

8

Binary

0011

1110

0000

1010

0101

0100

0110

1000

Decimal

62

10

84

104

ASCII

>

\n

T

h

 

Hexadecimal

6

5

2

0

7

2

6

5

Binary

0110

0101

0010

0000

0111

0010

0110

0101

Decimal

101

32

114

101

ASCII

e

 

r

e

 

Hexadecimal

7

1

7

5

6

5

7

3

Binary

0111

0001

0111

0101

0110

0101

0111

0011

Decimal

113

117

101

115

ASCII

q

u

e

s

 

Hexadecimal

7

4

6

5

6

4

2

0

Binary

0111

0100

0110

0101

0110

0100

0010

0000

Decimal

116

101

100

32

ASCII

t

e

d

 

 

Hexadecimal

5

5

5

2

4

C

2

0

Binary

0101

0101

0101

0010

0100

1100

0010

0000

Decimal

85

82

76

32

ASCII

U

R

L

 

 

Hexadecimal

2

F

7

E

6

3

7

3

Binary

0010

1111

0111

1110

0110

0011

0111

0011

Decimal

47

126

99

115

ASCII

/

~

c

s

 

Hexadecimal

6

9

7

3

3

4

3

1

Binary

0110

1001

0111

0011

0011

0100

0011

0001

Decimal

105

115

52

49

ASCII

i

s

4

1

 

Hexadecimal

3

0

2

F

3

2

3

0

Binary

0011

0000

0010

1111

0011

0010

0011

0000

Decimal

48

47

50

48

ASCII

0

/

2

0

 

Hexadecimal

3

0

3

3

2

F

6

2

Binary

0011

0000

0011

0011

0010

1111

0110

0010

Decimal

48

51

47

98

ASCII

0

3

/

b

 

Hexadecimal

6

C

7

5

6

5

7

4

Binary

0110

1100

0111

0101

0110

0101

0111

0100

Decimal

108

117

101

116

ASCII

l

u

e

t

 

Hexadecimal

6

5

6

3

6

8

2

F

Binary

0110

0101

0110

0011

0110

1000

0010

1111

Decimal

101

99

104

47

ASCII

e

c

h

/

 

Hexadecimal

5

2

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Programmer’s Hint: The name for this variable in code will be IP_TCP_HTTP_Data_HTTP.

 

 

 

 

 

 

 

 

 

 

3.0  Testing Requirements

 

3.1 Testing Overview

 

We will be assigning someone from outside of our company to test our software.  This will eliminate biases and create a fair environment to ensure that all requirements are met. 

 

We will be conducting these tests for the detailed design portion of development, which is the basis for the final development of the software.

 

We will be implementing gray box testing in the detailed design portion of our development.  Gray box testing is a testing procedure done with some knowledge of how the internals work.

 

            Attributes Tested:

            The result from a right/left click of the mouse on the:

·        Individual field of the packets

·        Hierarchical tree

·        Options

 

3.2 Test Cases

 

3.3  Testing Sheets

 

3.3.1        Functional Requirements

 

Functional Requirements

Date:                                      

Tester:                                   

Screen:           Pass                Fail        

 

Requirement

Actual Result

Comments

Pass

 Fail

Contains information for various protocols.

 

 

 

 

 

Requirement

Actual Result

Comments

Pass

 Fail

Produces GUI that colorfully and clearly displays contents of the specified protocol.

 

 

 

 

 

Requirement

Actual Result

Comments

Pass

 Fail

Displays clearly on a 1024x768 pixel screen.

 

 

 

 

 

 

Requirement

Actual Result

Comments

Pass

 Fail

Menus on top of screen should be visible on every page to allow user to change protocol, or switch between layers.

 

 

 

 

 

Requirement

Actual Result

Comments

Pass

 Fail

Ability to view either an independent field or an entire protocol in a different radix

 

 

 

 

 

 

 

 

 

 

 

Functional Requirements

 

Requirement

Actual Result

Comments

Pass

 Fail

Produces information box for each field of a protocol which displays Purpose of Field, Options for Pattern, Bit Pattern Form, and Minimum/Maximum Length

 

 

 

 

 

Requirement

Actual Result

Comments

Pass

 Fail

Displays RFC link for entire protocol or specific field when available.

 

 

 

 

 

 

3.3.2        Ethernet Testing Sheet

 

Screen: Ethernet

Date:                                      

Tester:                                   

Screen:           Pass                Fail        

 

Field Name: “Choose a Protocol” Button  

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Tree with all possible protocols is displayed

Field Name: IPv4 Button

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

By default, IPv4 will be displayed

Field Name: IPv6 Button

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Message box will be displayed saying that IPv6 is currently not available

Field Name: Preamble Sof Sync Data Field

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Preamble information box is displayed in a magenta box

Field Name: Datalink Header

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Datalink information field is displayed in a green box

 

Field Name: Frame Check Sequence (FCS)

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

FCS information field is displayed in a yellow box

 

Screen: Ethernet

Field Name: IP PDU

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

IP PDU information field is displayed in a cyan box

Field Name: “Different Protocol is Selected”

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Dynamic Road Map will change to show hierarchy of available protocols

 

 

 

3.3.3        IP Testing Sheet

 

Screen: IP PDU

Date:                                      

Tester:                                   

Screen:           Pass                Fail        

 

Field Name: Version 

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Version information field pops up in a pink box

Field Name: Internet Header Length

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Internet Header Length information field pops up in a cyan box

Field Name: Type of Service

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Type of Service information field pops up in a yellow box

Field Name: Total Length

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Total Length information field pops up in a green box

 

Field Name: Identification

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Identification information field pops up in an orange box

 

Screen: IP PDU

Field Name: Flags

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Flags information field pops up in a cyan box

Field Name: Fragment Offset

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Fragment Offset information field pops up in a magenta box

Field Name: Time to Live

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Time to Live information field pops up in a cyan box

Field Name: Protocol

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Protocol information field pops up in a pink box

Field Name: Header Checksum

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Header Checksum information field pops up in a yellow box

Field Name: Source IP Address

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Source IP Address information field pops up in a green box

 

Screen: IP PDU

Field Name: Destination IP Address

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Destination IP Address information field pops up in an orange box

Field Name: Options

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Options information field pops up in a cyan box

Field Name: Data

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Data information field pops up in a magenta box

 

3.3.4        TCP Testing Sheet

 

Screen: TCP PDU

Date:                                      

Tester:                                   

Screen:           Pass                Fail        

 

Field Name: Source Port      

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Source Port information field pops up in a pink box

Field Name: Destination Port

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Destination Port information field pops up in a cyan box

Field Name: Sequence Number

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Sequence Number information field pops up in a yellow box

Field Name: Acknowledgement Number

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Acknowledgment Number information field pops up in a green box

 

Field Name: Length

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Length information field pops up in a orange box

 

Field Name: Reserved

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Reserved information field pops up in a magenta box

Screen: TCP PDU

 

Field Name: URG

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

URG information field pops up in a orange box

 

Field Name: ACK

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

ACK information field pops up in a pink box

 

Field Name: PSH

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

PSH information field pops up in a cyan box

 

Field Name: RST

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

RST information field pops up in a magenta box

 

Field Name: SYN

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

SYN information field pops up in a green box

 

Field Name: FIN

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

FIN information field pops up in a yellow box

 

Field Name: Window Size

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Window Size information field pops up in pink box

 

Screen: TCP PDU

 

Field Name: Checksum

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Checksum information field pops up in a green box

 

Field Name: Urgent Pointer

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Urgent Pointer information field pops up in a yellow box

 

Field Name: Options

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Options information field pops up in a magenta box

 

Field Name: Data

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

 

 

2. Left Click

FTP PDU pops up

 

 

3.3.5        FTP Testing Sheet

 

Screen: FTP PDU

Date:                                      

Tester:                                   

Screen:           Pass                Fail        

 

Field Name: Destination Address

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Destination Address information field pops up in the appropriate colored box

Field Name: Source Address

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Source Address information field pops up in the appropriate colored box

 

Field Name: Pass

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Pass  information field pops up in the appropriate colored box

 

3.3.6        ICMP Testing Sheet

 

Screen: ICMP PDU

Date:                                      

Tester:                                   

Screen:           Pass                Fail        

 

Field Name: Type      

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Type information field pops up in an appropriately colored box

Field Name: Code

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Code information field pops up in an appropriately colored box

Field Name: Checksum

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Checksum information field pops up in an appropriately colored box

Field Name: Identifier

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Identifier information field pops up in an appropriately colored box

 

Field Name: Sequence

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Sequence information field pops up in an appropriately colored box

 

 

Screen: ICMP PDU

Date:                                      

Tester:                                   

Screen:           Pass                Fail        

Field Name: Data

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Data information field pops up in an appropriately colored box

 

3.3.7        SMTP Testing Sheet

 

Screen: SMTP PDU

Date:                                      

Tester:                                   

Screen:           Pass                Fail        

 

Field Name: Command         

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Command information field pops up in an appropriately colored box

Field Name: Message

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Message information field pops up in an appropriately colored box

 

3.3.8        UDP Testing Sheet

 

Screen: UDP PDU

Date:                                      

Tester:                                   

Screen:           Pass                Fail        

 

Field Name: Source Port      

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Source Port information field pops up in the appropriately colored box

Field Name: Destination Port

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Destination Port information field pops up in the appropriately colored box

Field Name: Length

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Length information field pops up in the appropriately colored box

Field Name: Checksum

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Checksum information field pops up in the appropriately colored box

 

Field Name: Data

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Data information field pops up in the appropriately colored box

 

 

3.3.9        SNMP Testing Sheet

 

Screen: SNMP PDU

Date:                                      

Tester:                                   

Screen:           Pass                Fail        

 

Field Name: Version 

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Version information field pops up in the appropriate colored box

Field Name: Community

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Community information field pops up in the appropriate colored box

Field Name: PDU Type

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

PDU information field pops up in the appropriate colored box

Field Name: Request ID

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Request ID information field pops up in the appropriate colored box

 

Field Name: Error Status

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Error status information field pops up in the appropriate colored box

 

 

 

 

Screen: SNMP PDU

Field Name: Object Id

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Object information field pops up in the appropriate colored box

Field Name: Value Integer

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Value information field pops up in the appropriate colored box

Field Name: Value ID

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Value ID information field pops up in the appropriate colored box

 

Field Name: Object ID

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Object information field pops up in the appropriate colored box

 

 

3.3.10     TELNET Testing Sheet

 

Screen: TELNET PDU

Date:                                      

Tester:                                   

Screen:           Pass                Fail        

 

Field Name: Data

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Data information field pops up in the appropriately colored box

 

3.3.11    SSH Testing Sheet

 

Screen: SSH PDU

Date:                                      

Tester:                                   

Screen:           Pass                Fail        

 

Field Name: Data

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Data information field pops up in the appropriately colored box

3.3.12    ARP Testing Sheet

 

Screen: ARP PDU

Date:                                      

Tester:                                   

Screen:           Pass                Fail        

 

Field Name: Hardware Address Type

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Hardware Address Type information field pops up in the appropriately colored box

Field Name: Protocol Address Type 

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Protocol Address Type information field pops up in the appropriately colored box

 

Field Name: Hardware Address Length

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Hardware Address Length information field pops up in the appropriately colored box

 

Field Name: Protocol Address Length

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Protocol Address Length information field pops up in the appropriately colored box

 

Field Name: Operation

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Operation information field pops up in the appropriately colored box

Screen: ARP PDU

 

Field Name: Sender Hardware Address

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Sender Hardware Address information field pops up in the appropriately colored box

Field Name: Protocol Address Type 

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Protocol Address Type information field pops up in the appropriately colored box

 

Field Name: Target Hardware Address

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Target Hardware Address information field pops up in the appropriately colored box

 

Field Name: Target Protocol Address 

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Target Protocol Address information field pops up in the appropriately colored box

 

3.3.13    PING Testing Sheet

 

Screen: PING

Date:                                      

Tester:                                   

Screen:           Pass                Fail        

 

Field Name: Destination      

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Destination information field pops up in the appropriately colored box

Field Name: Source

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Source information field pops up in the appropriately colored box

Field Name: Fragment

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Fragment offset information field pops up in the appropriately colored box

Field Name: Time to Live

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Time to Live information field pops up in the appropriately colored box

 

Field Name: Protocol

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Protocol information field pops up in the appropriately colored box

 

 

Screen: PING

Field Name: Header Checksum

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Header Checksum information field pops up in the appropriately colored box

 

Field Name: Source

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Source information field pops up in the appropriately colored box

 

Field Name: Destination

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Destination information field pops up in the appropriately colored box

Field Name: Checksum

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Checksum information field pops up in the appropriately colored box

 

Field Name: Identifier

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Identifier information field pops up in the appropriately colored box

 

Screen: PING

 

Field Name: Sequence Number

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Sequence number information field pops up in the appropriately colored box

 

 

3.3.14    HTTP Testing Sheet

 

Screen: HTTP

Date:                                      

Tester:                                   

Screen:           Pass                Fail        

 

Field Name: Fragment offset           

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Fragment offset information field pops up in the appropriate colored box

Field Name: Time to Live

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Time to Live field pops up in the appropriate colored box

Field Name: Protocol

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Protocol information field pops up in the appropriate colored box

Field Name: Header Checksum

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Header Checksum information field pops up in the appropriate colored box

 

Field Name: Source

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Source field pops up in the appropriate colored box

 

Screen: HTTP

Field Name: Destination

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Destination information field pops up in the appropriate colored box

 

Field Name: Header Length

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Header Length field pops up in the appropriate colored box

 

Field Name: Window Size

Attempted

Expected Result

Comments

Pass

 Fail

1. Right Click

Nothing pops up

 

 

 

2. Left Click

Window Size information field pops up in the appropriate colored box

 

 

4.0 Detailed Design Specification

 

4.1  Packaging and Deployment Specifications

 

Mirage Incorporated will install its Packet Descriptor application and all necessary files on the Siena Computer Science network, Oraserv, in a password protected area, enabling only Siena students to access the program.  An installation executable will be created and will be able to be run by the end user.  The user will then be able to load all the necessary files into a user-configurable directory on the local hard drive and create a shortcut on the start menu for the application.

 

A CD-ROM, which will include the application, all documents, and all presentations, will be given to our client, Mr. Swarner, for back-up. 

 

5.0  Appendix

 

5.1              Gantt Chart (Year)

 


5.2       Glossary

 

ASCII:

            American Standard Code for Information Interchange: a code for representing English characters as numbers, with each letter assigned a number from 0 to 127.

 

Attribute:

            A named value or relationship that exists for some or all instances of some entity and is directly associated with that instance.

           

Binary:

            Pertaining to a number system that has just two unique digits, 0 and 1.  Computers operate on a binary number system.

           

Code:

            The symbolic arrangement of data or instructions in a computer program or the set of such instructions.

 

Data Flow Diagram:

            A graphical notation used to describe how data flows between processes in a system.  They are a representation of the functional decomposition of a system.

 

Decimal:

            Refers to numbers in base 10—the numbers we use in everyday life.

 

Dynamic Combo Menu:

            Menu showing all actions possible at the current moment.

 

Frame:

A feature that divides a browser’s window into separate segments that can be scrolled independently of each other; a single step in a sequence of programmed instructions

 

GUI:

            Graphical User Interface: A user interface based on graphics (icons, pictures, and menus) instead of text; uses a mouse as well as a keyboard as an input device.

 

Gantt Chart:

            A chart that depicts progress in relation to time, often used in planning and tracking a project

 

Gray Box Testing: Testing procedure done with some knowledge of the internals.

 

HTML:

            Hypertext Transfer Markup Language: A markup language used to structure text and multimedia documents and to set up hypertext links between documents, used extensively on the World Wide Web.

 

Hexadecimal:

            Refers to the base-16 number system which consists of 16 unique symbols: the numbers 0 to 9 and the letters A to F.

           

Hypertext:

            A computer-based text retrieval system that enables a user to access particular locations in web pages or other electronic documents by clicking on links within specific web pages or documents.

 

Internet: 

            An interconnected system of networks that connects computers around the world via the TCP/IP protocol.

 

Linear Sequential Model:  

            Sometimes called the classic life cycle or the waterfall model, this model suggests a systematic, sequential approach to software development that begins at the system level and progresses through analysis, design, coding, testing, and support.

 

Linux:

            A trademark for an open-source version of the UNIX operating system.

 

Network: 

A group of two or more computer systems linked together.

 

Open-Source:

A method and philosophy for software licensing and distribution designed to encourage use and improvement of software written by volunteers by ensuring that anyone can copy the source code.

 

PHP: 

PHP Hypertext Preprocessor (server-side scripting language)

 

Packet:

A short block of data transmitted in a packet switching network.

 

PDU:

Protocol Data Unit: A packet of data passed across a network. 

 

Protocol:

A set of formal rules describing how to transmit data, especially across a network.

 

Prototype:

            An original type, form, or instance serving as a basis or standard for later stages.

 

RFC:

Request for Comments: One of a long-establish series of numbered Internet informational documents and standards widely followed by commercial software and freeware in the Internet and Unix communities.

 

Software:

The code executed by a computer, as opposed to the physical device which they run on.

 

TCP/IP:

Transmission Control Protocol/Internet Protocol: A suite of protocols for communication between computers, used as a standard for transmitting data over networks and as the basis for standard Internet protocols.

 

UNIX:

A powerful operating system developed at the ATT Bell Laboratories.

 

Use Case:

The specification of sequences of actions that a system, subsystem, or class can perform by interacting with outside actors.

 

Visible Analyst:

Project management software used in Computer-Aided Software Engineering (CASE) to create such illustrations as the data flow diagrams.