From owner-freebsd-questions@FreeBSD.ORG Tue Sep 7 14:52:33 2010 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 2C8C910656E5 for ; Tue, 7 Sep 2010 14:52:33 +0000 (UTC) (envelope-from sudakov@sibptus.tomsk.ru) Received: from relay2.tomsk.ru (relay2.tomsk.ru [212.73.124.8]) by mx1.freebsd.org (Postfix) with ESMTP id 772738FC13 for ; Tue, 7 Sep 2010 14:52:31 +0000 (UTC) X-Virus-Scanned: by clamd daemon 0.93.1 for FreeBSD at relay2.tomsk.ru Received: from admin.sibptus.tomsk.ru (account sudakov@sibptus.tomsk.ru [212.73.125.240] verified) by relay2.tomsk.ru (CommuniGate Pro SMTP 5.1.13) with ESMTPSA id 14323076 for freebsd-questions@freebsd.org; Tue, 07 Sep 2010 21:52:30 +0700 Received: from admin.sibptus.tomsk.ru (sudakov@localhost [127.0.0.1]) by admin.sibptus.tomsk.ru (8.14.3/8.14.3) with ESMTP id o87EqNn7056145 for ; Tue, 7 Sep 2010 21:52:30 +0700 (OMSST) (envelope-from sudakov@sibptus.tomsk.ru) Received: (from sudakov@localhost) by admin.sibptus.tomsk.ru (8.14.3/8.14.3/Submit) id o87EqN6P056144 for freebsd-questions@freebsd.org; Tue, 7 Sep 2010 21:52:23 +0700 (OMSST) (envelope-from sudakov@sibptus.tomsk.ru) X-Authentication-Warning: admin.sibptus.tomsk.ru: sudakov set sender to sudakov@sibptus.tomsk.ru using -f Date: Tue, 7 Sep 2010 21:52:23 +0700 From: Victor Sudakov To: freebsd-questions@freebsd.org Message-ID: <20100907145223.GA55660@admin.sibptus.tomsk.ru> Mail-Followup-To: Victor Sudakov , freebsd-questions@freebsd.org References: <20100822052550.GA42346@admin.sibptus.tomsk.ru> <20100907090012.GA48608@admin.sibptus.tomsk.ru> <4C8616F0.5010401@gmx.com> <20100907110033.GA51618@admin.sibptus.tomsk.ru> <4C864145.80805@gmx.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4C864145.80805@gmx.com> User-Agent: Mutt/1.4.2.3i Organization: AO "Svyaztransneft", SibPTUS X-PGP-Key: http://vas.tomsk.ru/vas.asc Subject: Re: ipfw fwd and ipfw allow 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: Tue, 07 Sep 2010 14:52:33 -0000 Nikos Vassiliadis wrote: > >>>Am I asking something unreasonable? > >> > >>Not really, but if you ask, one could say that IPFW is a "first > >>match wins" firewall, so a fwd or an allow action would be the > >>terminal one. You must design your rules accordingly. > >> > >>There is also the skipto action which can alter the way packets > >>flow through the rules. > >> > >>Could you describe in a conrete example what you're trying to > >>achieve? > > > >I want forwarded packets to create a dynamic "allow" rule. > > > > You can combine fwd and keep-state. I hope so. I just don't understand how. > Could you be more specific? A packet generated locally 1) should be forwarded by a 'fwd' rule and 2) should create a dynamic 'allow' rule for returning traffic. Could you please suggest a ruleset for this. -- Victor Sudakov, VAS4-RIPE, VAS47-RIPN sip:sudakov@sibptus.tomsk.ru