VPN and VNC
Wed Aug 28 08:18:00 2002
> -----Original Message-----
> From: email@example.com
> Hello - just getting into the VNC area, have a situation that I am
> searching thru the archives for a possible solution to.
> I have several users who come in on a VPN controlled by NetScreen
> I have installed on one of the test machines the VCN server software.
> When they attach via the LAN, I can run the client VCN and function
> However, when they VPN in, they are unable to be reached. They can
> browse the network , reach all resourses - no issues there.
> Just cannot
> seem to reach them via the VCN client.
First see if you can ping from the vncviewer machine to the vncserver
machine. (if ping is passed trough the firewall)
For vnc, the major communciation is for the rfb protocol on port 5900 (add
display number as display :4 is on 5904). See if you can telnet from the
viewer machine to the server machine on port 5900 `telnet vncservermachine
5900`. This should give a message like "rfb xxx.yyy".
> I thought perhaps I needed to change a firewall setting, but
> since they
> are now on the network - is that really needed?
Yep, open the used port: 5900 + displaynumber for the rfb communication.