Revision as of 21:00, 11 June 2006 edit JonHarder (talk \| contribs) Extended confirmed users, Rollbackers 36,355 edits Sharpen category. ← Previous edit		Revision as of 02:06, 17 September 2006 edit undo CmdrObot (talk \| contribs) 339,230 edits m sp: incomming→incoming Next edit →
Line 1: A '''Half-open Connection''' refers to a [[Transmission Control Protocol\|TCP]] connection that is partially open. The TCP protocol has a three state system for opening a connection. First, the originating site (A) sends a SYN packet to the destination (B). A is now half-open, and awaiting a response. B now updates its kernel information to indicate the ~~incomming~~incoming connection from A, and sends out a request to open a channel back (the SYN/ACK packet). At this point, B is now "Half-open" (it has sufficient information to receive packets, but not enough to send packets back). Note that B was put into this state by another machine, outside of B's control.

TCP half-open: Difference between revisions