SSH from behind a firewall to a server

Hi,

My company firewall blocks everything except port 80.

I have successfully used a SSH client from a non work machine to access
my home server on port 22.

Is there a way to use SSH from behind my company firewall to access my
home server?

Thanks

Alex

(E-Mail Removed) wrote:
> Hi,
>
> My company firewall blocks everything except port 80.
>
> I have successfully used a SSH client from a non work machine to access
> my home server on port 22.
>
> Is there a way to use SSH from behind my company firewall to access my
> home server?
>
> Thanks
>
> Alex
>
Configure your home server to listen for ssh connections on port 80.

Robert

Hi,

should have pointed out that I have apache running on port 80. Can I
have both of them running on port 80?

Alex

> should have pointed out that I have apache running on port 80. Can I
> have both of them running on port 80?

Only one server can listen on port 80 at a time. You could install a
front-end script with nc to listen on port 80, and hand off the connection
to either httpd or sshd depending on the source IP address. Kludgy, but it
would probably work.

Have you tried port 443? Most firewalls allow outgoing connections to port
443, for https. Another advantage of 443 is that while firewalls may filter
port 80 at the protocol level to be sure you're talking HTTP (and close the
connection if you're not), they generally give up on port 443 since that
usually carries encrypted traffic. I know of at least one firewall where
this is the case.

Good luck,
Andrew.

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