From owner-freebsd-ipfw@FreeBSD.ORG Tue May 20 03:38:47 2003 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 AA74F37B401 for ; Tue, 20 May 2003 03:38:47 -0700 (PDT) Received: from mout1.freenet.de (mout1.freenet.de [194.97.50.132]) by mx1.FreeBSD.org (Postfix) with ESMTP id 20F3B43F85 for ; Tue, 20 May 2003 03:38:46 -0700 (PDT) (envelope-from ino-qc@spotteswoode.de.eu.org) Received: from [194.97.50.138] (helo=mx0.freenet.de) by mout1.freenet.de with asmtp (Exim 4.20) id 19I4W3-0002nO-V9 for freebsd-ipfw@freebsd.org; Tue, 20 May 2003 12:38:43 +0200 Received: from pd9501609.dip.t-dialin.net ([217.80.22.9] helo=spotteswoode.dnsalias.org) by mx0.freenet.de with asmtp (ID inode@freenet.de) (Exim 4.20 #1) id 19I4W1-0002GV-Ve for freebsd-ipfw@freebsd.org; Tue, 20 May 2003 12:38:42 +0200 Received: (qmail 2754 invoked by uid 0); 20 May 2003 10:38:41 -0000 Date: 20 May 2003 12:38:41 +0200 Message-ID: From: "clemens fischer" To: "dmitry surovtsev" In-Reply-To: <20030519152605.2456.qmail@web12708.mail.yahoo.com> (dmitry surovtsev's message of "Mon, 19 May 2003 08:26:05 -0700 (PDT)") References: <20030519152605.2456.qmail@web12708.mail.yahoo.com> User-Agent: Gnus/5.1002 (Gnus v5.10.2) Emacs/21.3 (berkeley-unix) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii cc: freebsd-ipfw@freebsd.org Subject: Re: content-based firewall 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: Tue, 20 May 2003 10:38:47 -0000 dmitry surovtsev : >>I wrote a small application filter, for filtering >>application data >>to/from SMTP servers using ipfw's divert socket >>(actually, I used >>tee, so only a copy of the packet is sent to the >>divert socket). >> >>What kind of complexity do you need? > > Thanks for reply. I need to control all smtp, pop, and > http traffic. Where can I get your application filter? > Is it's source code available as well? i am interested in this as well. the only thing in this context i remember are the accf_http(9) filters. is the divert-filtering code somewhere publicly accessable? clemens