From owner-freebsd-security@FreeBSD.ORG Wed Apr 21 13:20:28 2004 Return-Path: Delivered-To: freebsd-security@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id BBCB516A564 for ; Wed, 21 Apr 2004 13:20:28 -0700 (PDT) Received: from orhi.sarenet.es (orhi.sarenet.es [192.148.167.5]) by mx1.FreeBSD.org (Postfix) with ESMTP id 80B4143D1F for ; Wed, 21 Apr 2004 13:20:28 -0700 (PDT) (envelope-from borjamar@sarenet.es) Received: from [192.168.2.3] (unknown [212.81.200.214]) by orhi.sarenet.es (Postfix) with ESMTP id F14FE7A31A4; Wed, 21 Apr 2004 22:20:26 +0200 (MEST) In-Reply-To: <6.0.3.0.0.20040421161217.05453308@209.112.4.2> References: <6.0.3.0.0.20040420125557.06b10d48@209.112.4.2> <6.0.3.0.0.20040420144001.0723ab80@209.112.4.2> <200404201332.40827.dr@kyx.net> <20040421111003.GB19640@lum.celabo.org> <6.0.3.0.0.20040421121715.04547510@209.112.4.2> <20040421165454.GB20049@lum.celabo.org> <6.0.3.0.0.20040421132605.0901bb40@209.112.4.2> <48FCF8AA-93CF-11D8-9C50-000393C94468@sarenet.es> <6.0.3.0.0.20040421161217.05453308@209.112.4.2> Mime-Version: 1.0 (Apple Message framework v613) Content-Type: text/plain; charset=US-ASCII; format=flowed Message-Id: <539B9B0C-93D1-11D8-9C50-000393C94468@sarenet.es> Content-Transfer-Encoding: 7bit From: Borja Marcos Date: Wed, 21 Apr 2004 22:20:26 +0200 To: Mike Tancsa X-Mailer: Apple Mail (2.613) cc: freebsd-security@freebsd.org Subject: Re: Other possible protection against RST/SYN attacks (was Re: TCP RST attack X-BeenThere: freebsd-security@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Security issues [members-only posting] List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 21 Apr 2004 20:20:28 -0000 > Thanks, I realize that, especially with iBGP. However for directly > connected eBGP peers, the question still stands. > > What side effects if any are there? Why is the default 64 and not > some other number like 255... I am sure the answer is out there, I > just need to find the question so I can cram it into google ;-) I can only think that it is a reasonable default. With a ttl of 200, for example, a routing loop would waste a lot of bandwidth for each undeliverable packet. Borja.