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Introduction

This document describes how to set up WinVNC to run over ssh under so that you can securely control a Windows NT machine over the network.

Setting up VNC

These instructions assume that you are using WinVNC 3.3.3r9. They may not work with other versions.

On the server machine,

• Install the latest WinVNC (3.3.3r9 or later). You can get WinVNC at the VNC download page
• Use regedit, add the DWORD value AllowLoopback set to 1 to HKEY_LOCAL_MACHINE\SOFTWARE\ORL\WinVNC3
• If you want WinVNC to only allow secure connections, also add the DWORD value LoopbackOnly set to 1 to HKEY_LOCAL_MACHINE\SOFTWARE\ORL\WinVNC3
• If ddesired, set it up as a service by executing: winvnc -install
• To start the service without rebooting: net start winvnc

Installing and Running sshd

On the server, install and run sshd. Next, make sure you're running sshd and WinVNC on the server machine.

Connecting

Then, once sshd and WinVNC are running on the server, go the the client machine (which is not the same machine as the server):

• start up the ssh client like this:
  ssh -L 590x:localhost:5900 -l username servermachine
  where x is the VNC display number you want to use on the local machine.
  For example: ssh -L 5901:localhost:5900 -l username servermachine
• Then, just start up the VNC viewer:
  vncviewer localhost:x
  where x is the VNC display number you want to use on the local machine.
  For example: vncviewer localhost:1

Note: if you want to use the Java browser method, you can probably do it by changing the 59 to 58 in the port numbers above, but I am not sure.