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I'm new to wireshark and I'm trying really hard to understand. What do SYN, ACK, FIN, and GET mean in wireshark? What are they and what do they do? Thank you

asked 06 Nov '14, 16:51

wolf1937's gravatar image

accept rate: 0%

Well, this is really hard to answer in a Q&A but I'll give it a try.

SYN ACK and FIN are bits in the TCP Header as defined in the Transmission Control Protocol

  • A SYN is used to indicate the start a TCP session
  • A FIN is used to indicate the termination of a TCP session
  • The ACK bit is used to indicate that that the ACK number in the TCP header is acknowledging data

The GET is a Hypertext Transfer Protocol command to ask for data from an HTTP Server
I'm sure there are many other 'GET' commands beside this one ...

You see, this is not really a wireshark related question but more a general TCP/IP question which opens up more questions that it actually answers.

Regards Matthias

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answered 07 Nov '14, 11:48

mrEEde's gravatar image

accept rate: 20%

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question asked: 06 Nov '14, 16:51

question was seen: 41,831 times

last updated: 07 Nov '14, 11:48

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