From owner-freebsd-security@FreeBSD.ORG  Thu Oct  7 18:05:30 2004
Return-Path: <owner-freebsd-security@FreeBSD.ORG>
Delivered-To: freebsd-security@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id DDFE116A4CE
	for <freebsd-security@freebsd.org>;
	Thu,  7 Oct 2004 18:05:30 +0000 (GMT)
Received: from yem.eng.utah.edu (yem.eng.utah.edu [155.99.222.96])
	by mx1.FreeBSD.org (Postfix) with ESMTP id C6FF143D31
	for <freebsd-security@freebsd.org>;
	Thu,  7 Oct 2004 18:05:30 +0000 (GMT)
	(envelope-from ogden@yem.eng.utah.edu)
Received: from ogden by yem.eng.utah.edu with local (Exim 4.42 (FreeBSD))
	id 1CFcet-0006YG-0u; Thu, 07 Oct 2004 12:06:31 -0600
Date: Thu, 7 Oct 2004 12:06:30 -0600
From: Mark Ogden <ogden@eng.utah.edu>
To: Volker Kindermann <ml@ps102.de>
Message-ID: <20041007180630.GA25130@yem.eng.utah.edu>
Mail-Followup-To: Volker Kindermann <ml@ps102.de>,
	freebsd-security@freebsd.org
References: <cvuam0t1l2u7npnigk6oqrlq288hlu0mgn@4ax.com>
	<20041007195417.430a8b5c@ariel.office.volker.de>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20041007195417.430a8b5c@ariel.office.volker.de>
User-Agent: Mutt/1.5.5.1i
Sender: Mark L Ogden <ogden@yem.eng.utah.edu>
cc: freebsd-security@freebsd.org
Subject: Re: Question restricting ssh access for some users only
X-BeenThere: freebsd-security@freebsd.org
X-Mailman-Version: 2.1.1
Precedence: list
List-Id: Security issues [members-only posting]
	<freebsd-security.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-security>,
	<mailto:freebsd-security-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-security>
List-Post: <mailto:freebsd-security@freebsd.org>
List-Help: <mailto:freebsd-security-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-security>,
	<mailto:freebsd-security-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Thu, 07 Oct 2004 18:05:31 -0000

Volker Kindermann on Thu, Oct 07, 2004 at 07:54:17PM +0200 wrote:
> Hi Jim,
> 
> 
> > I've used ssh as a secure telnet up to now but done little else with
> > it. The FreeBSD machines I look after on our internet-facing network
> > all have one account which I connect to for administration. I've set
> > up /etc/hosts.allow on all the machines to only allow ssh from a
> > limited internal network range.
> > 
> > Now I want to create a new account on one machine which will be
> > accessible from the Internet as a whole, to be used for tunnelling of
> > SMTP and POP3. I can't predict what the client IP address will be so I
> > will have to remove the hosts.allow restriction.
> 
> have you considered the "AllowGroups" and "AllowUsers" directives of 
> sshd_config? They should provide exact the functionality that you want.

But what if you have 1000 users? From my understanding you would have
to add all users to the AllowUsers list. 

-Mark
> 
>  -volker