Re: Reverse SSH tunelling

Check out this URL:

http://www.brandonhutchinson.com/ssh_tunnelling.html

you could probably combine that with key auth instead of passwords. 

And instead of having them always trying to ssh in, you could setup a
file on a webserver and have them parse the file. if they see their
hostname in the file it means they should "call home". just have em
check that file every 5 minutes or so.


On Wed, 25 Aug 2004 22:50:54 -0400, Raistlin Majere <raistlin@majere.net> wrote:
> Hi All,
>
>         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 ..
>
> Thanks
>
> Raist