From owner-freebsd-security Sun Sep 22 18:14:50 1996 Return-Path: owner-security Received: (from root@localhost) by freefall.freebsd.org (8.7.5/8.7.3) id SAA24883 for security-outgoing; Sun, 22 Sep 1996 18:14:50 -0700 (PDT) Received: from rover.village.org (rover.village.org [204.144.255.49]) by freefall.freebsd.org (8.7.5/8.7.3) with ESMTP id SAA24822 for ; Sun, 22 Sep 1996 18:14:44 -0700 (PDT) Received: from rover.village.org (localhost [127.0.0.1]) by rover.village.org (8.7.6/8.6.6) with ESMTP id TAA28187; Sun, 22 Sep 1996 19:14:18 -0600 (MDT) Message-Id: <199609230114.TAA28187@rover.village.org> To: Darren Reed Subject: Re: comments on the SYN attack Cc: security@FreeBSD.org In-reply-to: Your message of "Mon, 23 Sep 1996 10:10:44 +1000." <199609230010.SAA29579@information-retrieval.village.org> References: <199609230010.SAA29579@information-retrieval.village.org> Date: Sun, 22 Sep 1996 19:14:18 -0600 From: Warner Losh Sender: owner-security@FreeBSD.org X-Loop: FreeBSD.org Precedence: bulk In message <199609230010.SAA29579@information-retrieval.village.org> Darren Reed writes: : so, you're saying something like "if I already have an established : connection to this source host, try not to drop the half-open state" ? I hadn't intended to say that... I was wanting to make the point that it was expensive to drop insipient half-open connections and that should be avoided where possible. In a SYN Bombing scenario, however, that isn't possible, but it would argue, imho, to be conservative about what you drop. Warner