This is the scenario:

• A Windows XP client
• A Linux Server

The client is natted/firewalled/unreacheable from outside, the linux server is public.

I need to allow the client, once upon some conditions, to expose the remote desktop port (3389) on the Linux Server, somethig like ssh -R 3389:localhost:3389.

I dream it as a service, or something like that so I can start and stop the "forwarding-session" on my needs.

I've to pilot this session from some program-language (python or ruby mostly).

Any hint?

Thanks in advance.