From owner-freebsd-questions@FreeBSD.ORG  Sat Dec 27 21:33:52 2008
Return-Path: <owner-freebsd-questions@FreeBSD.ORG>
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 8ABA0106567D
	for <freebsd-questions@freebsd.org>;
	Sat, 27 Dec 2008 21:33:52 +0000 (UTC)
	(envelope-from admin2@enabled.com)
Received: from typhoon.enabled.com (typhoon.enabled.com [216.218.220.21])
	by mx1.freebsd.org (Postfix) with ESMTP id 38AF98FC13
	for <freebsd-questions@freebsd.org>;
	Sat, 27 Dec 2008 21:33:52 +0000 (UTC)
	(envelope-from admin2@enabled.com)
Received: from [172.23.0.135] (nat-service4.juniper.net [66.129.225.151])
	(authenticated bits=0)
	by typhoon.enabled.com (8.14.3/8.14.3) with ESMTP id mBRLXoAZ014574
	(version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NOT);
	Sat, 27 Dec 2008 13:33:51 -0800 (PST)
	(envelope-from admin2@enabled.com)
Message-ID: <49569F39.4030209@enabled.com>
Date: Sat, 27 Dec 2008 13:33:45 -0800
From: Noah <admin2@enabled.com>
User-Agent: Thunderbird 2.0.0.18 (Macintosh/20081105)
MIME-Version: 1.0
To: Matthew Seaman <m.seaman@infracaninophile.co.uk>
References: <4955887F.1090704@enabled.com> <44bpux7hjx.fsf@lowell-desk.lan>
	<49565C10.1010505@infracaninophile.co.uk>
In-Reply-To: <49565C10.1010505@infracaninophile.co.uk>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
Cc: User Questions <freebsd-questions@freebsd.org>
Subject: Re: running shell command through ssh tunnel
X-BeenThere: freebsd-questions@freebsd.org
X-Mailman-Version: 2.1.5
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: Sat, 27 Dec 2008 21:33:52 -0000

Matthew Seaman wrote:
> Lowell Gilbert wrote:
>> Noah <admin2@enabled.com> writes:
>>
>>> I am trying to run a shell command to the host at the far end of an ssh
>>> tunnel.   Here is how I structured access.  Is there any way to do this
>>> more compactly on one line?
>>>
>>>
>>> ssh -L 12345:192.168.1.20:22 noah@domain.com
>>> ssh -p 12345 localhost 'chown -R noah:noah /shares/internal/Music/'
>>
>> Maybe I haven't had enough coffee yet, but wouldn't that just be
>> ssh noah@192.168.1.20 'chown -R noah:noah /shares/internal/Music/'
>> ?  You might even want to use '-n' as an option to the ssh command.
> 
> ENOCOFFEE.  Your equivalence is only the case if you're already logged
> into 'domain.com'  This is a fairly standard idiom for tunnelling a network
> connection in through a NAT gateway or a firewall from an external Internet
> site to a protected RFC 1918 internal back-end, although the forwarded 
> protocol
> is usually other than SSH.
> 
> Given that the OP is wanting to tunnel SSH through SSH, a one-liner to
> achieve his desired effect might be something like:
> 
> ssh noah@domain.com ssh noah@192.168.1.20 chown -R noah:noah 
> /shares/internal/Music/


you will the prize.   please retrieve it on the way out. :)


> 
>     Cheers,
> 
>     Matthew
>