Plantage eibd

[tru]

Que dois-je faire pour que le port soit accessible?

Don't get confused with "telnet". You cannot verify the port like that because it's based on UDP and telnet can only talk over TCP.
But you may still check firewall rules both directions and routing. I just sniffed my network traffic and there are ports 3671 and 3672 involved. BTW: you don't need to specify the port, should be assigned automatically.

Regards, Othmar