From owner-freebsd-security@FreeBSD.ORG Tue Apr 20 17:09:39 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 350C716A4CE for ; Tue, 20 Apr 2004 17:09:39 -0700 (PDT) Received: from smtp3b.sentex.ca (smtp3b.sentex.ca [205.211.164.50]) by mx1.FreeBSD.org (Postfix) with ESMTP id D98C943D3F for ; Tue, 20 Apr 2004 17:09:38 -0700 (PDT) (envelope-from mike@sentex.net) Received: from avscan1.sentex.ca (avscan1.sentex.ca [199.212.134.11]) by smtp3b.sentex.ca (8.12.11/8.12.11) with ESMTP id i3L09ZXB052847; Tue, 20 Apr 2004 20:09:35 -0400 (EDT) (envelope-from mike@sentex.net) Received: from lava.sentex.ca (pyroxene.sentex.ca [199.212.134.18]) by avscan1.sentex.ca (8.12.10/8.12.10) with ESMTP id i3L09Z3x029090; Tue, 20 Apr 2004 20:09:35 -0400 (EDT) (envelope-from mike@sentex.net) Received: from simian.sentex.net (simeon.sentex.ca [192.168.43.27]) by lava.sentex.ca (8.12.11/8.12.11) with ESMTP id i3L09YcI040979; Tue, 20 Apr 2004 20:09:34 -0400 (EDT) (envelope-from mike@sentex.net) Message-Id: <6.0.3.0.0.20040420200911.08a87fa8@209.112.4.2> X-Sender: mdtpop@209.112.4.2 (Unverified) X-Mailer: QUALCOMM Windows Eudora Version 6.0.3.0 Date: Tue, 20 Apr 2004 20:11:31 -0400 To: Matthew Dillon From: Mike Tancsa In-Reply-To: <20040421000254.GK724@empiric.dek.spc.org> References: <6.0.3.0.0.20040420125557.06b10d48@209.112.4.2> <593EE0FE-9309-11D8-A8CA-003065ABFD92@mac.com> <200404202045.i3KKjKSb090656@apollo.backplane.com> <20040421000254.GK724@empiric.dek.spc.org> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; format=flowed X-Virus-Scanned: by amavisd-new cc: freebsd-security@freebsd.org Subject: 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 00:09:39 -0000 At 08:02 PM 20/04/2004, Bruce M Simpson wrote: >On Tue, Apr 20, 2004 at 01:45:20PM -0700, Matthew Dillon wrote: > > 99.9% of all BGP links are direct connections (meaning that they > > terminate at a router rather then pass through one). No packet to > > or from port 179 has any business being routed from one network to > > another in virtually all BGP link setups so the fix is utterly trivial. > >This isn't necessarily the case with eBGP multihop or route-server based >setups. Cogent and 360/GT both like to do ebgp multihop by default. ---Mike