NX short form for NoMachine's X protocol is a compression technology developed by NoMachine which allows one to run complete remote desktop sessions (be it Linux or Windows) even at dial up internet connection speeds.

One of the advantages of using NX technology over VNC is that NX uses SSH on port 22 for connection between the client and the server. Which means all the communication takes place encrypted through industry standard SSL public key cryptography.

FreeNX is the GPL implementation of NoMachine's NX server. To have access to a remote desktop, you need to have two software.

I tried this technology by connecting via dialup to a demo remote server run by NoMachine and I was really impressed by the speed with which I recieved the remote KDE desktop.

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