Re: Reverse SSH tunelling

On Wed, 25 Aug 2004 22:50:54 -0400, Raistlin Majere <raistlin@majere.net> wrote:
>         I need some advice .. I have a situation where about fifty servers 
> will
> be located in fifty sites that cannot allow services to be hosted. These
> servers will be in private network space behind firewalls. I can use
> them to 'scp' files out to a common home base server, but sometimes I
> need to access a command line console on these servers. I am thinking of
> having a hourly cron job ssh out to my home base server and leaving that
> tunnel open  so that I can access that console, but am looking for the
> specific way of doing this. Security os pf the utmost concern, so I need
> some sort of encrypted tunnel, hence the thought of ssh, but I don't
> know how to do this 'reverse' tunnel... I was also thinking of a 'free
> swan' vpn tunnel ..

Look at something like
http://www.onlamp.com/pub/a/onlamp/2003/05/29/netcat.html or Google
for "reverse netcat" and similar. You can still tunnel through ssh or
use cryptcat for security.

-- 
Kyle Maxwell
[krmaxwell@gmail.com]