What is TCP SYN, ACK, FIN, handshake, teardown, and connection states?

Solution Verified - Updated -

Issue

  • What is TCP handshake, teardown, and connection states?
  • What are SYN, ACK, FIN in TCP connections?
  • In a TCP connection, which is the "client" and which is the "server"?
  • In a TCP connection, which side decides to close the connection first?

Environment

  • Red Hat Enterprise Linux
  • TCP/IP networking

Subscriber exclusive content

A Red Hat subscription provides unlimited access to our knowledgebase, tools, and much more.

Current Customers and Partners

Log in for full access

Log In