Tunnel VNC through SSH

How to connect to a Mac VNC session through a tunnel using putty

Create a session profile

Use the IP address of the remote computer you are connecting to. The ssh port is 22 by default.

Enable compression to make the session faster

Setup the tunnel options

The default VNC port on Mac is 5900. The source port is a free and open port on your local machine. (You may need to open that port on your firewall). The 'local' radio button should be selected. Click add, go back to sessions and save the session for next time:

Launch vncviewer

Select locahost:50005 (or whatever local port you use):

You will need the VNC server password, naturally. You'll need to ask someone who knows what it is!