It is necessary to open the TCP port. UDP is optional, but you can open the UDP port too.
If you do, your node has to be configured accordingly though. See:
This said, I doubt that’s what’s causing your issue here.
It is necessary to open the TCP port. UDP is optional, but you can open the UDP port too.
If you do, your node has to be configured accordingly though. See:
This said, I doubt that’s what’s causing your issue here.