Date: Thu, 6 Jul 2000 22:45:19 -0500 (CDT) From: Mike Silbersack <silby@silby.com> To: jayanth <jayanth@yahoo-inc.com> Cc: net@FreeBSD.ORG Subject: Re: deleting cloned routes Message-ID: <Pine.BSF.4.21.0007062241400.44331-100000@achilles.silby.com> In-Reply-To: <20000706192402.A25086@yahoo-inc.com>
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On Thu, 6 Jul 2000, jayanth wrote: > One of the issues during a syn flood is that the routing table > fills up easily because of the cloned routes being generated. > > In Freebsd current, an incomplete connection is randomly dropped > when the listen queue overflows. This logic could be easily extended > by deleting the cloned route that is associated with the connection > being dropped , if there is no information cached for that route. > > Is this a reasonable fix ? > > jayanth Seems to make sense on the surface to me. But, I haven't ever looked at the route code, so I have one more question: Even with the routes deleted won't you still end up with a bloated, fragmented route table? (Granted, it'll cap the growth by a large amount, so it should still be a big win.) Mike "Silby" Silbersack To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message
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