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[ts-7000] Re: SSH Tunneling

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Subject: [ts-7000] Re: SSH Tunneling
From: "Yan Seiner" <>
Date: Fri, 08 Jun 2007 21:02:11 -0000
--- In  "Jamey" <> wrote:
>
> Hi, 
> 
> Can anyone recommend a decent way to get information to/from a TS-XXXX
> placed behind a firewall?
> 
> I have the need to maintain a series of these critters long distance
> and seperated by a firewall. Our IT gestapo here has stonewalled my
> efforts for remote access and I need a way to get around them. I will
> make it legit later. 
> 
> I was doing a little reading on (open)SSH and tunneling/ port
> forwarding and it looks promising. There was even a cookbook recipe in
> the faq on how to do it. What I am looking for is actual users who
> have field deployed systems like this and any successes or problems
> they have encountered. 

If you can start ssh on the remote end, set up your ssh so you don't
need passwords.  Then just have the remote end call you.  You can then
tunnel back into the box.  I forget the exact incantations, but it has
to do with forwarding local port 22 to remote port XX22, then ssh to
localhost:xx22.

Now you have to watch your transfers; you are tunneling TCP over TCP
and that can be bad juju.  Large transfers are likely to fail and
possibly saturate the connection on the slower end.  (TCP over TCP can
get into a state where it continues to retransmit requests for
retransmits, and if you're really unlucky the whole thing will
snoball.  Google for this on the web.)

I can't recommend getting in trouble, though... :-(



 
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