3. Installing the NX Client


You can install either opennx or nxclient from NoMachine.

3.1. Installation of opennx

Note: If you have already installed NoMachine's nxclient, you need to uninstall it before installing opennx. Existing setup for the clients should become available to opennx.

Opennx is available for CentOS-6 from the centos-extras repository. To install it, issue this command on the client machine:

[root@client ~]# yum install opennx

  • Open the NX Connection Wizard. Enter a Session name, a hostname (or ip address), a Port number and select your Type of Internet Connection and select Next.

  • Select the connection type, the desktop system you want to use, and the size of the desktop. Select Next when finished.

  • In the next dialog window, make sure "Enable SSL encryption of all traffic" is checked and then select Next.

  • Choose if you want to Create shortcut on desktop and then Select Show the Advanced Configuration dialog box and then select Finish.

  • In the advanced dialog window under the General Tab, you should see the items you have already entered and a Key...button. You will need to ssh into the server which you are trying to connect and go to the /etc/nxserver/ directory and open the file client.id_dsa.key (you must be the root user to open this file). Copy all the text (including the BEGIN DSA PRIVATE KEY and END DSA PRIVATE KEY lines. Press the Key... button, delete the text that is in there, and paste theclient.id_dsa.key information from the server into the Key Management text box, then select Save. You will be back in the Session properties dialog box. Select OK and you are all set.


  • You should now be able to connect to the Server machine and open your desktop from the client.

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