How TCP Works - No Operation Option

Hey packet people!

If you have ever had to analyze a TCP connection, you have definitely seen a three-way handshake. In that handshake, both TCP stacks will exchange the options they are open to use for the connection. In the options field, you may also see several instances of the No-Operation value.

How does this value work? What does it mean (other than no-operation of course), and how should I interpret it?

Get the answers to these questions here:

Hope it helps in troubleshooting with Wireshark!

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Author Profile - Chris Greer is a Chief Packet Head for Packet Pioneer LLC and a Certified Wireshark Network Analyst. Chris regularly assists companies in tracking down the source of network and application performance problems using a variety of protocol analysis and monitoring tools including Wireshark. Chris also delivers training and develops technical content for Wireshark and for several analysis vendors.