[4143] in linux-net channel archive
Re: SYN floods
daemon@ATHENA.MIT.EDU (Alan Cox)
Thu Aug 22 06:44:29 1996
From: Alan Cox <alan@cymru.net>
To: shagboy@bluesky.net
Date: Thu, 22 Aug 1996 09:37:18 +0100 (BST)
Cc: nelson@crynwr.com, linux-net@vger.rutgers.edu
In-Reply-To: <Pine.LNX.3.91.960821232517.133C-100000@cirrus.bluesky.net> from "Racer X" at Aug 21, 96 11:27:51 pm
> same problem, but it hits inetd instead. My question is - can a
> connection that is in state SYN_RECV be arbitrarily terminated at any
> time, or does it have to wait for the timeout in the TCP code?
It cannot be terminated for the TIME_WAIT period without the risk of
data corruption on other connections. So you are stuck with it for at least
2 minutes (probably 4 to be right). BSD locks this to 75seconds + TIME_WAIT
which isnt a bad plan so long as you don't plan to operate over amateur
radio, into space and other unusual links
Alan
