Forum / NoMachine for Linux / How to change the listening port of nxagent? / Reply To: How to change the listening port of nxagent?
tcp 0 0 0.0.0.0:7001 0.0.0.0:* LISTEN 20758/nxnode.bin
tcp 0 0 0.0.0.0:7002 0.0.0.0:* LISTEN 26853/nxnode.bin
tcp 0 0 0.0.0.0:7003 0.0.0.0:* LISTEN 16466/nxnode.bin
tcp 0 0 0.0.0.0:7004 0.0.0.0:* LISTEN 21998/nxnode.bin
Those ports are the TCP X11 display ports. You have four node processes. Each node is listening on a different X11 display.
In X11, the port number and the display have a fixed offset of 6000, that is TCP Port = Display Number + 6000.
So that, those nodes are listening on X11 displays :1001, :1002, :1003, :1004. NoMachine is set to begin display count at 1001. New node processes will get progressive numbers.