In the last update, I talked about what you need to do on the host computer or virtual machines to allow Remote Desktop connections. This time I’ll take a look at setting up your firewall to forward external RDP requests to the appropriate computer or VM. This is known as port forwarding, and will vary from one firewall application and router to another.
On my router, a Verizon FIOS router, this is found under Firewall Settings, Port Forwarding.
Here, I’ve created an entry for TCP port 3389 to forward to 192.168.1.100, my Hyper-V host computer on my internal network.

Next you need to know what your external IP address is on your router/firewall. This can be done by browsing to http://whatismyipaddress.com/. In order to test that it’s actually working, you can either have a friend try to connect by opening up a Remote Desktop Connection to your external IP address. If you assigned a different port, you will need to specify that here.
Posted Sunday, January 31st, 2010 at 10:32 pm by peterl
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