Tunnelling and Listening Viewers

[Andrew Borland]

I have, in the past, successfully used SSH (PuTTY) to securely tunnel a 
VNC session into a server from a remote client.

I am now wondering whether it is possible to use SSH (PuTTY) to secure 
a reverse connection where the server does an "add client" back to a 
listening viewer for firewall traversal?

If it is possible, which end of the link has to initiate the PuTTY 
session, and do I need to tunnel anything other than port 5500? Does 
the listening viewer connection even support ports other than 5500 yet?

Regards,  Andrew Borland (UK)