The first TCP segment sent by a client.

TCP segments contain flags. These are defined in Section 3.1 of RFC793.

The segment below was sent by a client to create a TCP connection towards a web server. Ingicated the values of the SYN, URG, PSH, ACK, FIN and RST flags inside this segment (1 means set and 0 means reset)?

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Establishment of a TCP connection

This segment was sent by a client to create a TCP connection towards a web server. What are the flags that must be set inside this segment ?

#	Length	Summary	Status
0	24 bytes	`Transmission Control Protocol, Src Port: 53722, Dst Port: 1234, Seq: 3977449417, Len: 0`

0000 d1da04d2ed130fc9 0000000060??7080
0010 00000000020405a0

0000 ÑÚ.Òí..É....`?p.
0010 ........

Transmission Control Protocol, Src Port: 53722, Dst Port: 1234, Seq: 3977449417, Len: 0
- Source Port: 53722
- Destination Port: 1234
- Sequence number: 3977449417
- Acknowledgment number: 0
- 0110 .... = Header Length: 24 bytes (6)
- Flags
  - 000. .... .... = Reserved: Not set
  - ...0 .... .... = Nonce: Not set
  - .... 0... .... = Congestion Window Reduced (CWR): Not set
  - .... .0.. .... = ECN-Echo: Not set
  - .... ..?. .... = Urgent: ?
  - .... ...? .... = Acknowledgment: ?
  - .... .... ?... = Push: ?
  - .... .... .?.. = Reset: ?
  - .... .... ..?. = Syn: ?
  - .... .... ...? = Fin: ?
- Window size value: 28800
- Urgent pointer: 0
- Options: (4 bytes), Maximum segment size
  - TCP Option - Maximum segment size: 1440 bytes
    - Kind: Maximum Segment Size (2)
    - Length: 4
    - MSS Value: 1440

Author(s)	Olivier Bonaventure
Deadline	No deadline
Submission limit	No limitation
Category tags	tcp

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