From owner-freebsd-net Wed Feb 2 10:40:41 2000 Delivered-To: freebsd-net@freebsd.org Received: from amalthea.salford.ac.uk (amalthea.salford.ac.uk [146.87.255.61]) by builder.freebsd.org (Postfix) with SMTP id EF6D2410A for ; Wed, 2 Feb 2000 10:40:31 -0800 (PST) Received: (qmail 23326 invoked by alias); 2 Feb 2000 18:34:56 -0000 Received: (qmail 23320 invoked from network); 2 Feb 2000 18:34:56 -0000 Received: from plato.salford.ac.uk (146.87.255.76) by amalthea.salford.ac.uk with SMTP; 2 Feb 2000 18:34:56 -0000 Received: (qmail 22683 invoked by uid 141); 2 Feb 2000 18:34:55 -0000 Date: Wed, 2 Feb 2000 18:34:55 +0000 (GMT) From: Mark Powell To: freebsd-net@freebsd.org Subject: Can 3.4-S cope with packets not addressed to it? Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-net@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org We want to force the use of our web caches. Our boundary router is a 3Com NetBuilder II, which we can get to forward port 80 traffic to another IP address. However, it does not rewrite the destination IP address in the IP header. Thus the machine has to be directly connected to the router to actually get the packets. What I'm wondering, is can FreeBSD cope with this? Will it be able to process these packets, with an IP address that is not it's own, at all or is this a non-starter? I suppose if it can then a more elegant solution to our caching needs can be found. We have two caches and would ideally like to spread this forwarded traffic across them. Could a 3rd FreeBSD box be plugged directly into the router and selectively forward packets to both servers? This would enable load balancing of this enforced traffic. Thanks for any help, as it's the first time I've even attempted anything like this. I'm assuming that ipfw or ipfilter will be what I want, but I have little experience of them. Cheers. Mark Powell - UNIX System Administrator - Clifford Whitworth Building A.I.S., University of Salford, Salford, Manchester, UK. Tel: +44 161 295 5936 Fax: +44 161 295 5888 www.pgp.com for PGP key M.S.Powell@ais.salfrd.ac.uk (spell salford correctly to reply to me) To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message