This article applies to NX v. 3.5.0.  For running RDP sessions with NoMachine 4 please refer to:

https://www.nomachine.com/AR07J00645

A minimal environment to run RDP sessions with NX 3.5.0 requires at least two hosts:

Host A: the host on which NX Server and appropriate NX Node and NX Client  packages are installed (the NX host)

Host B: the Windows host designated to provide Terminal Services (the Terminal server host)

The NX host must be able to open a connection to the port 3389 of the Terminal server host (the standard port for RDP services) over the TCP protocol.

For more information about support for RDP and VNC in NX 3.5.0:

https://www.nomachine.com/AR06E00469