Reply To: Failed to connect to NoMachine Server with error "Invalid server identification" Forum / NoMachine for Linux / Failed to connect to NoMachine Server with error "Invalid server identification" / Reply To: Failed to connect to NoMachine Server with error "Invalid server identification" December 13, 2013 at 17:27 #1278 BritgirlKeymaster Check that you have set up your forwarding to port 4000. If you are connecting via NX, NXD listens on the default port 4000.
