Ubuntu – Set “Remote desktop” host server remotely

I solved this issue by right clicking on the entry in Remmina, going to edit, clicking on the advanced tab, and then changing the security field to "RDP" from "Negotiate"

NX Free Edition for Linux

An enterprise-class multi-platform solution for remote access and virtual desktop delivery.

http://www.nomachine.com/select-package.php?os=linux&id=1

DEB version

Download the DEBs

Change your working directory to the location where you saved the package and install it by running from a console:

  $ sudo dpkg -i nxclient_3.5.0-7_i386.deb
  $ sudo dpkg -i nxnode_3.5.0-9_i386.deb
  $ sudo dpkg -i nxserver_3.5.0-11_i386.deb

If you don't have the sudo utility installed, log on as superuser ("root") and run the commands without sudo.

Note: click here for detailed instructions on how to install the NX Client, NX Node and NX Server packages. The NX service can be controlled by the command

/usr/NX/bin/nxserver --status|--start|--stop|--restart.

Additional commands are available to configure the server. Try

/usr/NX/bin/nxserver --help

for more information.

Please, don't forget to download and read the NX Server Administrator's Guide available here.