[Cialug] ssh tunnel between two cliens via the help of a server

[Tom Pohl]

Yes, it is possible to do this!  I do it all the time with my twin  
brother when he has a linux server on the inside of his network that  
he wants me to play with.  You've basically got the idea to do a  
local port on one machine and a remote port on the other.  The only  
thing missing from the commands shown is the intermediary public  
server that both clients will connect to.

You'd then point your VNC client to localhost from the computer with  
the -L command and you're good to go!  Keep in mind, port 6000 needs  
to be available on the remote machine to bind on otherwise it won't  
work.

-Tom

On Jul 28, 2006, at 11:52 AM, Claus wrote:

> Does anybody know if it's possible to have two ssh clients connect  
> to the same server and establish a ssh tunnel to transmit traffic  
> from one client to the other?
>
> My application would be with VNC where both clients sit behind NAT  
> and don't have public IPs.  Each client create a ssh tunnel to a  
> ssh server and thus connect with each others.  Maybe with something  
> like this:
>  VNC server:
>    ssh -R 6000:localhost:6000
>  VNC client:
>    ssh -L 6000:localhost:6000
>
> Is that possible?
>   Claus
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