port mapping in Windows NT

Peter van Heun pvanheun "at" e-mail.demon.nl
Fri Jan 9 10:27:00 2004


Hello,

I have a Windows NT Server 4.0 running as mailserver and ftp-server as wich
uses DHCP to assign ip-adresses to clients through the ip-adres
192.168.0.200. The internet connection is esthablished on ip-adres
10.0.0.150 wich comes from the router wich has ip-adress 1.2.3.4. One of the
clients with Windows ME gets the ip-adres 192.168.0.20 ans is running VNC
server on port 20. On the NT server is VNC server running at port 0. On the
fire wall of the router a have opend the ports and used NAT to redirect the
ip-adresses 1.2.3.4:5900 to 10.0.0.150:5900 and 1.2.3.4:5920 to
10.0.0.150:5920.
I can access the server from anywhere on the internet trough a VNC viewer by
1.2.3.4 or 1.2.3.4:0. But i can not connect to the client. Neither with
1.2.3.4:20. I have used Portmapper from AnalogX on the NT server by mapping
port 20 to 192.168.0.20. This doesn't work. Portmapper show as the ip-adress
10.0.0.150. Maybe this has to be 192.168.0.200 but I don't know how to do
this in Portmapper. I can reach the client directly from the server so VNC
is working.

Anyone has a suggestion how I can reach the client with VNC from over the
internet?

I have a similar configuration on a Windows 2000 Workstation with Internet
Connection Sharing wich works fine. But in Windows 2000 you can add settings
to the Internet Connection Sharing by mapping ports. Windows NT doesn't has
this feature.

Greetings, Peter



pvanheun "at" e-mail.demon.nl


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