TCP half-open: Difference between revisions

Revision as of 20:58, 9 January 2008

Revision as of 10:08, 9 March 2008

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A '''half-open connection''' refers to a [[Transmission Control Protocol|TCP]] connection that is partially open, which is in the process of being established.

The TCP protocol has a three state system for opening a connection. First, the originating site (A) sends a [[SYN (TCP)|SYN packet]] to the destination (B). A is now half-open, and awaiting a response. B now updates its kernel information to indicate the incoming connection from A, and sends out a request to open a channel back (the SYN/ACK packet).

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