Question : Accessing Remote desktop through Nat network

Hi,
I have situation where i have 2 isolated network
let me explain more about the 2 networks first.
- both network have their own Internet provider
- each network configured to block any incoming traffic but allow any outgoing traffic to the Internet.
- one of the network allow only out going traffic through proxy.
- both network uses NAT.


i have 2 systems one in each network (both windows xp)  and have Remote desktop running on it
since i can't change the configuration of the network on the Internet gateway i can't setup port forwarding for it

what i want is to be able to access the machine  in the other network using remote desktop ?

Answer : Accessing Remote desktop through Nat network

If you cannot re-configure the hardware, an alternative may be to use a relatively new, free, 3rd party, VPN server/client, called Hamachi.  Hamachi requires no configuration of ports on a firewall or other devices such as remote desktop, VNC, RAdmin do. It makes 2 out going connections from both systems to a 3rd party server, which coordinates the handshaking, and then sends them on their merry way. Because the initial requests are outgoing connections, no firewall modifications are required to configure incoming connections. If you have added specific outgoing firewall or proxy blocking rules this may not be possible. Once Hamachi has established the VPN connection, all ports within the VPN are open as if you were on the local network. Therefore you can then use remote desktop, file sharing, or other services you require. You may want to have a look. It is very simple to set up:
http://www.hamachi.cc
If you wish to run it as a service there is a paid version or you can do so with a couple of little Microsoft apps and changes:
http://www.itsatechworld.com/2006/01/17/hamachi-vpn-solution/
see batch file near end:
http://forums.hamachi.cc/viewtopic.php?t=522&postdays=0&postorder=asc&highlight=batch&start=15