To get get remote desktop to work with NIS 2010 you need to open NIS then click Settings in the Network part of the GUI.
You then under Smart Firewall you Click on Configure On Advanced Settings.
Then on General Rules Click Configure. Then ADD Select Allow and then next and Select Connections to and From other computers.
Then Click Next under what Computers leave at Any and select Next.
Then Select the Type of port and select Only Communications that match all types and ports listed below: and then Click Add to add the port you need to select Individually specified ports as Remote desktop isn't listed as a port.
And enter the port 3389 you need to add it for both Local and Remote.
Once both Local and Remote are in there click next.
Select Log and or NAT traversal and click next.
Name the Rule you made click next and Finish if it looks correct.
Then Click OK to close all the NIS windows and it will now allow Remote desktop connection throught NIS 2010