From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Shaun T. Erickson" Subject: Re: incoming interface confusion question Date: Mon, 21 Jun 2004 15:28:54 -0400 Sender: netfilter-admin@lists.netfilter.org Message-ID: <40D736F6.50405@smxy.org> References: <40D71EC4.7090900@smxy.org> Reply-To: ste@smxy.org Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <40D71EC4.7090900@smxy.org> Errors-To: netfilter-admin@lists.netfilter.org List-Help: List-Post: List-Subscribe: , List-Id: List-Unsubscribe: , List-Archive: Content-Type: text/plain; charset="us-ascii"; format="flowed" To: netfilter@lists.netfilter.org Shaun T. Erickson wrote: > Are there any cases where iptables can be confused about what interface > a packet came in on? Can a packet arriving on interface A ever be > reported as arriving on interface B? > > I had an incident this weekend, and am trying to be certain that the > packets came in the interface my system said it did. It's a Red Hat 9 > system, running their stock 2.4.20-8 kernel. Please, can anyone answer this for me? I'm trying to prove or disprove a theory that would explain an apparent intrusion incident over the weekend. It's very important that I know the definitive answer to this. Thanks. -ste