From owner-freebsd-questions@FreeBSD.ORG Fri Jan 27 01:42:58 2006 Return-Path: X-Original-To: freebsd-questions@freebsd.org Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 204D316A431 for ; Fri, 27 Jan 2006 01:42:58 +0000 (GMT) (envelope-from on@cs.ait.ac.th) Received: from mail.cs.ait.ac.th (mail.cs.ait.ac.th [192.41.170.16]) by mx1.FreeBSD.org (Postfix) with ESMTP id 3A8BE43DA9 for ; Fri, 27 Jan 2006 01:42:46 +0000 (GMT) (envelope-from on@cs.ait.ac.th) Received: from banyan.cs.ait.ac.th (banyan.cs.ait.ac.th [192.41.170.5]) by mail.cs.ait.ac.th (8.12.11/8.12.11) with ESMTP id k0R1fl0s086186 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Fri, 27 Jan 2006 08:41:47 +0700 (ICT) Received: (from on@localhost) by banyan.cs.ait.ac.th (8.13.1/8.12.11) id k0R1gV6G049755; Fri, 27 Jan 2006 08:42:31 +0700 (ICT) Date: Fri, 27 Jan 2006 08:42:31 +0700 (ICT) Message-Id: <200601270142.k0R1gV6G049755@banyan.cs.ait.ac.th> From: Olivier Nicole To: ikaney@crisiant.com In-reply-to: <20060126115051.8840D43D45@mx1.FreeBSD.org> (ikaney@crisiant.com) References: <20060126115051.8840D43D45@mx1.FreeBSD.org> X-Virus-Scanned: on CSIM by amavisd-milter (http://www.amavis.org/) Cc: freebsd-questions@freebsd.org Subject: Re: Bridging Firewall Machine Questions X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 27 Jan 2006 01:42:58 -0000 > I've also had problems with the bridge running out of dynamic rules. I've > raised them to silly figures however I'm always wary that if a machine had a > Trojan or some other form of malware that attempted a DoS attack, the bridge > would probably fall over after exhausting its dynamic rule count and cause I beleive other firewall solution (iptable or ipchain whatever is the newest) have rate limiting for specific kind of traffic, so this should prevent DoS, but as far as I remember ipfw has no such feature. Olivier