Remote desktop thru firewall via vpn

Question

Scheme:

My_macbook -> INTERNET -> Linux_Proxy_Firewall-> Lion_On_The_Internal_Network

So, need set up encrypted tunnel between my macbook and Linux firewall and want connect into the internal Lion via Apple Remote Desktop.

Looking for a simple, bulletproof - verified solution (so, from someone who really use it) for using ARD via VPN (road warrior config).

Probably here is a way setup tunnels with plain ssh(1) or with SshTunnelManager, but never tried it yet - so any advice and/or real experiences is welcomed...

Asking for real experience because here Apple wrote:

When using VPN, you may need to set your router to allow a larger MTU and/or to disallow fragmented packets. For details, refer to the Admin Guide for your version of Apple Remote Desktop.

Answer 1

So... simple with ssh-tunnels:

Into the terminal:

ssh -N -p 22 -c 3des user@firewall.example.com -L 15900/10.1.1.1/5900 -L 13283/10.1.1.1/3283

Where:

user@firewall.example.com - is an valid username on the firewall, and
10.1.1.1 - is the address of the lion-server on the internal network

This will create two tunnels between local computer and remote firewall. In the Remote Desktop.app you should manually add the remote server like this:

Now, you can observe/control the "internal-server" via tunnels thru firewall.example.com.