From owner-freebsd-ipfw@FreeBSD.ORG Thu Mar 18 03:30:36 2004 Return-Path: Delivered-To: freebsd-ipfw@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 4E76A16A4CE for ; Thu, 18 Mar 2004 03:30:36 -0800 (PST) Received: from deliver.epitech.net (deliver.epitech.net [163.5.0.25]) by mx1.FreeBSD.org (Postfix) with SMTP id C34A843D39 for ; Thu, 18 Mar 2004 03:30:35 -0800 (PST) (envelope-from le-hen_j@epita.fr) Received: from epita.fr ([10.42.1.60]) by deliver.epitech.net (SAVSMTP 3.1.2.35) with SMTP id M2004031812274715482 ; Thu, 18 Mar 2004 12:27:47 +0100 Received: from annelo (annelo.epita.fr [10.42.120.68]) by epita.fr id i2IBUXM08572 Thu, 18 Mar 2004 12:30:33 +0100 (CET) Date: Thu, 18 Mar 2004 12:30:33 +0100 From: jeremie le-hen To: Thomas Vogt Message-ID: <20040318113033.GB5536@annelo.epita.fr> References: <4058710F.4060608@gmx.net> <40588915.1040905@mac.com> <40589524.60801@gmx.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <40589524.60801@gmx.net> User-Agent: Mutt/1.4i cc: freebsd-ipfw@freebsd.org cc: Chuck Swiger Subject: Re: layer7 filter? X-BeenThere: freebsd-ipfw@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: IPFW Technical Discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 18 Mar 2004 11:30:36 -0000 > Yes, but as far as I know, divert is slow. It's not usable in > enviroments with >=100mbit. But I'm glad if you can show me that this > not true :) On the other hand, layer 7-filtering is not what we can call a fast match method against network traffic. AFAIK "L7-filter" for NetFilter is based on regular expressions, and matching even a simple re against every packet in a 100MBits environnement would be rather expensive. -- Jeremie LE HEN aka TtZ/TataZ jeremie.le-hen@epita.fr ttz@epita.fr Hi! I'm a .signature virus! Copy me into your ~/.signature to help me spread!