Re: Reforwarding ports in ssh

[Greg Thomas <getbsd_(_at_)_sbcglobal_(_dot_)_net>]

On Wednesday, Nov 27, 2002, at 11:27 US/Pacific, Chris Eidem wrote:

> Is it possible to reforward an already forwarded port in ssh?  No hints
> in Google or the mailing lists as far as I could tell.
>
> Basically, I'm attempting to rdesktop from home over a ssh session.  If
> I start it up as such:
>
> ssh -g -L 3389:server1:3389 localbox
>
> I get to server server1 through the command
>
> desktop$ rdesktop localbox
>
> That works fine, but since MS RDP protocol is braindead and will listen
> on 3389/tcp only, I can't figure out how to connect to server2 on port
> 3389 without tearing down the session and starting it all over again.
> I've tried doing the ~C during the session and adding -L
> 3389:server2:3389, but ssh complains that ain't happening.  I've
> attempted to de-allocate forwarding with -L 3389:, but, again, no joy.

You didn't say whether rdesktop is braindead, too?  If it's not 
braindead you could do ssh -g -L 3390:server2:3389 localbox and do 
rdesktop localbox 3390 for the second server.

I did a Google and it seems there are patches out there to allow 
rdesktop to use different ports, probably for situations just such as 
these.

Greg