From mboxrd@z Thu Jan 1 00:00:00 1970 From: "John A. Sullivan III" Subject: Re: Force use of outgoing IP address Date: Fri, 01 Jun 2007 13:24:31 -0400 Message-ID: <1180718671.6539.1.camel@localhost> References: Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: netfilter-bounces@lists.netfilter.org Errors-To: netfilter-bounces@lists.netfilter.org Content-Type: text/plain; charset="us-ascii" To: Neil Russell Cc: netfilter@lists.netfilter.org On Fri, 2007-06-01 at 17:42 +0100, Neil Russell wrote: > Hi, > > new to all this so please be gentle with me.... > > I have a linux router with 3 network cards in, each card has multiple IP > address's assigned. I want to route all aoutbound traffic TO a > destination port of $DESTPRT out of eth0 on its IPAddress of 10.0.0.2 > > > Example is > > Eth0 has IP address's of > 10.0.0.1 > 10.0.0.2 > 10.0.0.3 > and connects to 10.0.0.99 (Internet router) > > eth1 has ip address's of > 192.168.0.1 > 192.168.0.2 > 192.168.0.3 > > > and eth3 has ip address's of > 192.168.1.0 > 192.168.1.2 > 192.168.1.3 > > > So ALL traffic on the router with a destination address MUST go out on > eth0 and show its IP address as 10.0.0.2 even though the default route > is out via 10.0.0.1 > > Hope thats clear and that someone can advise. > > > Neil. > I believe you're going to want to use iproute2 to do this. There is a somewhat dated slideshow on doing something very close to this (if I recall correctly) in the training section of http://iscs.sourceforge.net -- John A. Sullivan III Open Source Development Corporation +1 207-985-7880 jsullivan@opensourcedevel.com Financially sustainable open source development http://www.opensourcedevel.com