Date: Mon, 03 Jan 2005 13:40:48 -0500 From: Mark Allman <mallman@icir.org> To: Mike Silbersack <silby@silby.com> Cc: net@freebsd.org Subject: Re: Fixing "Slipping in the window" before 4.11-release Message-ID: <20050103184048.471E477B0CC@guns.icir.org> In-Reply-To: <20050103012325.A62262@odysseus.silby.com>
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--=-=-= Content-Type: text/plain > The SYN side of the equation, however, is a bit more tricky. The > proposed RFC recommends ACKing SYN packets in the window, just like > we do to SYN packets to the left of the window right now. > > For the life of me, I can't figure out why SYN packets (other than > delayed retransmissions of the original SYN) would ever show up once > a connection is in the ESTABLISHED state. So, I'm proposing the > attached patch, which simply ignores any packet with the SYN flag on > it while a connection is in the ESTABLISHED state. This means that > SYN packets left of the window will no longer receive an ACK, and > SYN packets in the window will no longer reset the connection. In > all states other than ESTABLISHED, SYN packets are handled as they > were before, in case there's some edge case where that could happen. This sounds OK to me. FWIW. allman -- Mark Allman -- ICIR -- http://www.icir.org/mallman/ --=-=-= Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.3 (FreeBSD) iD8DBQFB2ZGwWyrrWs4yIs4RAnE2AJ9kz9hIaqfpTQNzBGH4qwTWXBQXRQCghDNA gDnWFNkuM1aYvf64BSX/OOc= =vpD3 -----END PGP SIGNATURE----- --=-=-=--
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