From owner-freebsd-net@FreeBSD.ORG  Thu Feb  5 16:14:11 2004
Return-Path: <owner-freebsd-net@FreeBSD.ORG>
Delivered-To: freebsd-net@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP
	id 7112816A4CE; Thu,  5 Feb 2004 16:14:11 -0800 (PST)
Received: from corbulon.video-collage.com (corbulon.video-collage.com
	[64.35.99.179])	by mx1.FreeBSD.org (Postfix) with ESMTP
	id EBF7C43D39; Thu,  5 Feb 2004 16:14:08 -0800 (PST)
	(envelope-from mi+mx@aldan.algebra.com)
Received: from 250-217.customer.cloud9.net (195-11.customer.cloud9.net
	[168.100.195.11])i160E6aT072288
	(version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK);
	Thu, 5 Feb 2004 19:14:07 -0500 (EST)
	(envelope-from mi+mx@aldan.algebra.com)
Received: from localhost (mteterin@localhost [127.0.0.1])
	i160Drw3093358;	Thu, 5 Feb 2004 19:13:54 -0500 (EST)
	(envelope-from mi+mx@aldan.algebra.com)
From: mi+mx@aldan.algebra.com
Organization: Murex N.A.
To: net@FreeBSD.org
Date: Thu, 5 Feb 2004 19:13:53 -0500
User-Agent: KMail/1.5.4
MIME-Version: 1.0
Content-Type: text/plain;
  charset="us-ascii"
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
Message-Id: <200402051913.53266@misha-mx.virtual-estates.net>
X-Scanned-By: MIMEDefang 2.39
cc: questions@FreeBSD.org
Subject: switching to an internal DSL modem -- natd, ipfw
X-BeenThere: freebsd-net@freebsd.org
X-Mailman-Version: 2.1.1
Precedence: list
List-Id: Networking and TCP/IP with FreeBSD <freebsd-net.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-net>,
	<mailto:freebsd-net-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-net>
List-Post: <mailto:freebsd-net@freebsd.org>
List-Help: <mailto:freebsd-net-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-net>,
	<mailto:freebsd-net-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Fri, 06 Feb 2004 00:14:11 -0000

Hello!

My current network setup consists of the ISP-provided DSL-modem plugged
into the little switch together with the rest of the network. One of the
machines on the runs natd and the others use it as the default router.

To get better protection I should be using a separate Ethernet card, into
which only the modem will be plugged in. This is not as convenient from
the cabling prospective, however.

But what about an internal modem? Like

	http://store.yahoo.com/softbuyweb/inpcidslmod3.html

It seems, en(4) should be able to use it and it should be able to connect
to the ISP -- their modem is the Efficient Network's SpeedStream, which
uses the same chip, most likely:

	Hardware Interface Name  - SpeedStream 5660-R:ENI
	Hardware Interface Desc  - Motorola 850 SAR Alcatel/RT Adapter
	Hardware Serial Number   - [...]
	Hardware Revision Number - 00010001
	Hardware Instance Number - 0
	Driver Name              - enatm0

	(notice the ``en'' in the driver name)

But -- will natd(8), the ipfw (4) and (8) work properly with en0? Any
other potential problems? Thanks!

	-mi