From owner-freebsd-ipfw Sun Jul 1 15: 2: 2 2001 Delivered-To: freebsd-ipfw@freebsd.org Received: from albatross.prod.itd.earthlink.net (albatross.mail.pas.earthlink.net [207.217.120.120]) by hub.freebsd.org (Postfix) with ESMTP id 4BF6037B403 for ; Sun, 1 Jul 2001 15:02:00 -0700 (PDT) (envelope-from cjc@earthlink.net) Received: from blossom.cjclark.org (dialup-209.247.143.73.Dial1.SanJose1.Level3.net [209.247.143.73]) by albatross.prod.itd.earthlink.net (EL-8_9_3_3/8.9.3) with ESMTP id PAA08070; Sun, 1 Jul 2001 15:00:27 -0700 (PDT) Received: (from cjc@localhost) by blossom.cjclark.org (8.11.4/8.11.3) id f61M04B10977; Sun, 1 Jul 2001 15:00:04 -0700 (PDT) (envelope-from cjc) Date: Sun, 1 Jul 2001 14:59:57 -0700 From: "Crist J. Clark" To: Robert Banniza Cc: freebsd-ipfw@FreeBSD.ORG Subject: Re: IPFW and triple-homed box... Message-ID: <20010701145957.F296@blossom.cjclark.org> Reply-To: cjclark@alum.mit.edu References: <20010701110834.B296@blossom.cjclark.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: ; from robert@rootprompt.net on Sun, Jul 01, 2001 at 01:36:24PM -0700 Sender: owner-freebsd-ipfw@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On Sun, Jul 01, 2001 at 01:36:24PM -0700, Robert Banniza wrote: > Guys, > I've got a box that I would like to add a third interface to for a DMZ. > However, I'm having more questions than answers right now. I have basically > the following interfaces: > > xl0 (external interface to router) > fxp0 (internal interface using NAT) > fxp1 (DMZ interface using REAL IP on this interface as well as all machines > having a real IP) > > I want to allow ports 80,443 and 25 over to one single real IP on the DMZ > while allowing nothing to flow in to the internal network from the DMZ. I > also want all traffic on the internal network allowed out to the 'net and > allowed over to the DMZ. The first question I have is will you be using subnetting to do this, in which case the firewall will be routing, or not, which requires either NAT (not a big issue) or bridging (still a bit of a hack to combine with ipfw)? I think that needs to be cleared up before anyone can help much more. -- Crist J. Clark cjclark@alum.mit.edu To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-ipfw" in the body of the message