I have a Parallels Desktop virtual machine with Host-Only networking. I want to set up Remote Desktop on Windows (port 3389) while not exposing any other part of Windows to the external network. Parallels adds a virtual network adapter that allows me to communicate with the Windows machine. On OSX I tried to add the following rule:
sudo ipfw add 100 fwd ,3389 tcp from any to 10.37.129.3 dst-port 3389
But it doesn't seem to work. Is there anything wrong with my rule? Is there another way of doing this?