X-Recipient:	archive-cygwin AT delorie DOT com
X-Spam-Check-By:	sourceware.org
To:	cygwin AT cygwin DOT com
From:	=?ISO-8859-1?Q?Ren=E9_Berber?= <r DOT berber AT computer DOT org>
Subject:	Re: Limit access via openssh?
Date:	Wed, 14 Nov 2007 15:02:49 -0600
Lines:	33
Message-ID:	<fhfnpp$hd$1@ger.gmane.org>
References:	<loom DOT 20071114T140507-70 AT post DOT gmane DOT org>
Mime-Version:	1.0
User-Agent:	Thunderbird 2.0.0.6 (Windows/20070728)
In-Reply-To:	<loom.20071114T140507-70@post.gmane.org>
X-IsSubscribed:	yes
Mailing-List:	contact cygwin-help AT cygwin DOT com; run by ezmlm
List-Id:	<cygwin.cygwin.com>
List-Unsubscribe:	<mailto:cygwin-unsubscribe-archive-cygwin=delorie DOT com AT cygwin DOT com>
List-Subscribe:	<mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive:	<http://sourceware.org/ml/cygwin/>
List-Post:	<mailto:cygwin AT cygwin DOT com>
List-Help:	<mailto:cygwin-help AT cygwin DOT com>, <http://sourceware.org/ml/#faqs>
Sender:	cygwin-owner AT cygwin DOT com
Mail-Followup-To:	cygwin AT cygwin DOT com
Delivered-To:	mailing list cygwin AT cygwin DOT com

Tony Benham wrote:

> This isn't strictly a cygwin question, but I'm using cygwin ssh implement=
ation.
> I have an external user that uses ssh & public key to open a tunnel to my
> windows server running cygwin. They use the tunnel to connect to an apache
> server inside our network. This all works fine. What I want to do is to l=
imit
> their access to only the apache server, and prevent them opening terminal=
s on
> our server ?
> Is this possible ?

Yes.  The way to do it is using the options on the authorized_keys file,
see 'man 8 sshd' section 'AUTHORIZED_KEYS FILE FORMAT'.

The format of ~/.ssh/authorized_keys is:

TYPE KEY COMMENT

you use the format with options:

options TYPE KEY COMMENT

where, in your case, options are:

no-pty,no-X11-forwarding,no-agent-forwarding,permitopen=3D"host:port"

(change host:port to the values used by your tunnel).
--=20
Ren=E9 Berber


--
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple
Problem reports:       http://cygwin.com/problems.html
Documentation:         http://cygwin.com/docs.html
FAQ:                   http://cygwin.com/faq/

- Raw text -