From owner-freebsd-questions@FreeBSD.ORG  Tue Mar 22 12:42:31 2005
Return-Path: <owner-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 0338616A4CE
	for <freebsd-questions@freebsd.org>;
	Tue, 22 Mar 2005 12:42:31 +0000 (GMT)
Received: from ns.mccme.ru (ns.mccme.ru [62.117.108.2])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 2EFAA43D48
	for <freebsd-questions@freebsd.org>;
	Tue, 22 Mar 2005 12:42:30 +0000 (GMT)	(envelope-from emin@mccme.ru)
Received: from mccme.ru (IDENT:root@mccme.ru [62.117.108.7])
	by ns.mccme.ru (8.12.10/8.12.10) with ESMTP id j2MCmsO1022737;
	Tue, 22 Mar 2005 15:48:55 +0300 (MSK)
	(envelope-from emin@mccme.ru)
Received: from mccme.ru (IDENT:emin@localhost.mccme.ru [127.0.0.1])
	by mccme.ru (8.9.3/8.9.3) with SMTP id PAA23158;
	Tue, 22 Mar 2005 15:42:20 +0300
Date: Tue, 22 Mar 2005 15:42:20 +0300
From: "Eugene M. Minkovskii" <emin@mccme.ru>
To: "Peter N. M. Hansteen" <peter@bgnett.no>
Message-ID: <20050322124220.GB3137@mccme.ru>
References: <20050320093159.GA3213@mccme.ru>
	<861xaamf9t.fsf@amidala.datadok.no> <20050321071227.GA29429@mccme.ru>
	<86eke9fn7o.fsf@amidala.datadok.no> <20050322120451.GA3137@mccme.ru>
	<86hdj36fho.fsf@amidala.datadok.no>
Mime-Version: 1.0
Content-Type: text/plain; charset=koi8-r
Content-Disposition: inline
Content-Transfer-Encoding: 8bit
In-Reply-To: <86hdj36fho.fsf@amidala.datadok.no>
User-Agent: Mutt/1.4.2.1i
Organization: MCCME Moscow
X-MCCME-Spam: No, score=0.018 required=5
	tests=AWL,FORGED_RCVD_HELO,SPF_HELO_PASS
cc: freebsd-questions@freebsd.org
Subject: Re: OpenBSD's pf and traffic
X-BeenThere: freebsd-questions@freebsd.org
X-Mailman-Version: 2.1.1
Precedence: list
List-Id: User questions <freebsd-questions.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>,
	<mailto:freebsd-questions-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-questions>
List-Post: <mailto:freebsd-questions@freebsd.org>
List-Help: <mailto:freebsd-questions-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>,
	<mailto:freebsd-questions-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Tue, 22 Mar 2005 12:42:31 -0000

On Tue, Mar 22, 2005 at 01:18:27PM +0100, Peter N. M. Hansteen wrote:
" "Eugene M. Minkovskii" <emin@mccme.ru> writes:
" 
" 
" I'd say something along the lines of 
" 
" allowed_out = "{ ssh, domain, http, https, etc... }"
" 
" pass out on $ext_if proto tcp $allowed_out label allowed-out keep state
" 
" you could differentiate among source addresses, for example by
" specifying
" 
" client1 = "{ 192.68.n.1, 192.168.n.2 }"
" client1 = "{ 192.68.n.3, 192.168.n.4 }"
" 
" client2_inports = { whatever they need }
" 
" pass out on $ext_if from $client1 to any proto tcp $allowed_out \
"      label client1 keep state
" 
" pass out on $ext_if from $client2 to any proto tcp $allowed_out \
"      label client2-out keep state
" 
" pass from any to $client2 $client2_inports label client2-in keep state
" 
" and so on. Hope this helps.

Just a moment, does it mean that your last rule allow any
incoming connections from world to clients if thay matched by
client2_inports, ANY, not only connections opened by clients?

Moreover, I read in documentation, that state table reads BEFORE
rules, and connections that opened by clients in first rule:

pass out on $ext_if from $client1 to any proto tcp $allowed_out \
     label client2 keep state

whill not marked by label client2-in because thay don't pass to
this rule. Am I right?

-- 
Sensory  yours, Eugene  Minkovskii
Сенсорно ваш,   Евгений Миньковский