Date: Mon, 9 Nov 2009 21:14:21 +0100 From: Svante Kvarnstrom <sjk@ankeborg.nu> To: Kevin Kinsey <kdk@daleco.biz> Cc: freebsd-questions@freebsd.org Subject: Re: Remote ssh tunnel in background or script? Message-ID: <F2652639-EACC-44FB-858D-D4153FA8D055@ankeborg.nu> In-Reply-To: <4AF85FC9.10103@daleco.biz> References: <4AF85FC9.10103@daleco.biz>
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Hello
Have you tried -f (for background) and -N for "Do not execute a remote =20=
command"? See man 1 ssh for more details.
Svante
On Nov 9, 2009, at 7:30 PM, Kevin Kinsey wrote:
> Greetings!
>
> I have a client who recently dropped static IP service in
> favor of a "cheaper" solution, so they're now on a DHCP network
> blocking port 25, etc.
>
> In order to continue to allow them to connect to an outbound
> SMTP box on the LAN, I've done this on their server:
>
> sudo ssh -L thisbox:24:remotebox:52525 me@remotebox
>
> I've got Sendmail listening there on 52525, and it works
> fine; the local clients are told to connect to "thisbox"
> port 24. The only issue is that I have to run it from
> a terminal session. When I tried to bg the process ("cmdstring &")
> it doesn't work, exactly. I've gotten an error message
> at times*, and at other times I apparently get "thisbox"
> listening on port 24 but it's not an SMTP daemon that's
> listening.
>
> I have a feeling it's cause I'm in csh, which is notorious
> for backgrounding issues. <?> At any rate, what I'd
> like to do is have a script set up the connection, or
> write some daemon that would monitor the connection and
> fix it if it gets reset. At any rate, if I could get this
> SSH process to detach from a terminal, it'd be great.
>
> Any suggestions?
>
> Kevin Kinsey
>
> * I'm sorry, but I can't reproduce the error message
> this morning. IIRC, something to the effect of
> "I can't do nothing, give me a command please?"
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Best wishes,
Svante J. Kvarnstr=F6m
http://sjk.ankeborg.nu/
Mob.: +46 702 38 34 00
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