Christian, On Sat, 15 Sep 2001, Christian Schlettig wrote:
> Hello group, > > the following scenario: > > INET --ADSL|-- LINUX -- INTERNAL LAN > 1.1 1.x > > i'm using debian 2.2r3 with kernel 2.2.19 for > the linux router. The internal lan has one > linux clients and 5 win95 clients. the router > acts as a email server and www proxy no other > services are used yet. I've installed VNC on > the clients and would like to remote > administrate them if the users ask for it and > turn VNC on. > > My question is whether it is possible to > initiate a VNC Connection from the inet to one > specific client in the internal LAN. Can i > configure VNC to use different ports on the > clients and then portforward them to the > internal client? Yes, it is easy to forward ports through a firewall using ipmasqadm. For example the following command forwards port 80 to (some) internal host /usr/sbin/ipmasqadm portfw -a -P tcp -L x.x.1.1 http -R x.x.1.x http use Xvnc -help to see how you can change the ports VNC listens on... It looks like there are a few options. You specify which port the client connects to by the display number: vncviewer localhost:1 (port 5901) vncviewer localhost:2 (port 5902) vncviewer localhost:-50 (port 5850) I believe there is a limit on these port numbers (I tried connecting to a server on port 20000 and it didn't work)... Good luck! Roger
