I downloaded the binary file, thank you. Looking in C:\”Program Files (x86)\NoMachine\bin” there is no nxupnp.exe file. To make sure, I uninstalled NoMachine, downloaded the latest version and installed. Again, inspecting C:\”Program Files (x86)\NoMachine\bin” there was no nxupnp.exe file. Never the less, I copied the file you provided and copied it to C:\”Program Files (x86)\NoMachine\bin” as nxupnp.exe (Windows did not complain saying there was another file of the same name). Running nxupnp.exe -l gave no output. Running nxupnp.exe -v reported Port forwarding protocol: ‘auto’
Using the known external IP address to : nxupnp.exe -A list 4000 -R 121.xxx.xxx.xxx TCP 600
Failed to add ports
Local IP: 192.168.1.3
Gateway IP: 192.168.1.1
External IP: 0.0.0.0