From owner-freebsd-questions Wed May 12 13:35:42 1999 Delivered-To: freebsd-questions@freebsd.org Received: from resnet.uoregon.edu (resnet.uoregon.edu [128.223.144.32]) by hub.freebsd.org (Postfix) with ESMTP id 0E87F153EB for ; Wed, 12 May 1999 13:35:39 -0700 (PDT) (envelope-from dwhite@resnet.uoregon.edu) Received: from localhost (dwhite@localhost) by resnet.uoregon.edu (8.8.8/8.8.8) with ESMTP id NAA07409; Wed, 12 May 1999 13:35:36 -0700 (PDT) (envelope-from dwhite@resnet.uoregon.edu) Date: Wed, 12 May 1999 13:35:34 -0700 (PDT) From: Doug White To: daniel B Cc: freebsd-questions@FreeBSD.ORG Subject: RE: ipfw on multiple NICs In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Sun, 9 May 1999, daniel B wrote: > I am in the process of setting up a firewall for my internal Freebsd LAN > The network looks like this: > > Internet-----[ DSL router ]----[ fbsd firewall ]----[ LAN ] > ep1 ep0 > > I have compiled my kernel for IPFIREWALL_VERBOSE > Added support for net interface ep1 in kernel > Enabled ipfw in the /etc/rc.conf > and I am using the 'simple' rule-set in /etc/rc.firewall to test setup > All machines (router, firewall and LAN) are on the same subnet /27 > All vital services DNS, HTTP and SMTP are running on the LAN machines > > My questions are: > 1.) What kind of gateway or routing mechanism should I use to force > incoming packets from the Internet to arrive at ep1 and pass through the > firewall and to ep0 and to the LAN > > 2.) outgoing packets from LAN to pass through ep0, firewall, ep1, router > and to the Internet. > > The LAN consept here is probably misleading because all machines are in > the same /27 subnet. Turn 'gateway_enable=YES' on in /etc/rc.conf, configure your interfaces, add a default route, and you should be set to go. I would _highly_ suggest saving some cash and setting up natd on the firewall. Doug White Internet: dwhite@resnet.uoregon.edu | FreeBSD: The Power to Serve http://gladstone.uoregon.edu/~dwhite | www.freebsd.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message