ncat tunnelling

[Darren Martyn <darren () vps-heaven com>]

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Hello list,
So, I spent the last while experimenting with ncat, finding it a
suitable replacement for the original netcat. However I was wondering if
it is possible to do something rather unusual.

Lets say Host A, my internet facing server, has SSH open on port 22/TCP

Host B is behind NAT, and a firewall which only allows 53/UDP. Any UDP
packets will do.

Now, on the server side - Host A, I basically want to setup ncat as a
listener on 53/UDP, acting as a bidirectional pipe between 22/TCP and
53/UDP.

On the client side - Host B, I want to bind a listener to 1337/TCP,
acting as a proxy that sends all traffic bidirectionally over UDP to
host A (on 53/UDP).

The reasons for this should be fairly obvious, and I have been using DNS
tunnels up to now. However a "faster" solution is a UDP tunnel, and I
was wondering someone could advise me as to the correct way to get this
working with ncat.

Apologies if this is to the wrong list, I figured it would be best to
ask the people who develop the software :)
 
I have tried using | and > to pipe data, but failed miserably BTW. We
can also assume both hosts use the latest SVN versions of ncat.

Best regards,
Darren
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