VNC on different port

[Bill Moran]

Thomas_Knight at adp.com wrote:

> My configuration is as follows:
> 
> -------         -----------         -----------------         ------
> | VNC | --- --- | FreeBSD | --- --- | Work Firewall | --- --- | ME |
> -------         -----------         -----------------         ------
> 
> I am trying to redirect ports so I can get out through my works firewall
> into my VNC Server. I can get it to work on port 8080 but not on 80 or 20 or
> 21. My work only allows 20, 21, 22, 80 through the firewall. Please see the
> example below. 
> 
> This does work:
> redirect_port tcp 10.0.3.21:5900 166.70.126.172:8080
> This does not work:
> redirect_port tcp 10.0.3.21:5900 166.70.126.172:80
> 
> Any one have any idea's?

If your work uses a transparent proxy for port 80, it's going to see the
VNC traffic as invalid HTTP data and probably mangle it or drop it.

You'd actually be better off using ssh to do encrypted port tunnelling,
since your firewall allows it already.  Running VNC unencrypted across the
Internet is dangerous.

Either way, try one of the other available ports.  Port 22 unlikely to be
proxied in any case.

-- 
Bill Moran
Potential Technologies
http://www.potentialtech.com