I have been confused regarding the port number assignments also. Most stand-alone servers like power devices, cameras, etc., allows one to manually assign a port number to the device, but not duplicating a port number used on another piece of equipment. Where do these numbers come from and why can't we assign any arbitrary port number to the radio?
Do I have this right? Aren't ports (typically) one way in or one way out? I'm guessing that the same outgoing port number on different servers would not interfere with each other but different incoming ports on different servers are needed to route traffic to the correct servers.
That's how I've been interpreting the port number discussions.
Or you can do a 1:1 translation where you define tcp port 4992 on the firewall to map to port 4992/tcp on the radio and define udp port 4993 on the firewall to map to port 4993/udp on the radio.
Do what ever your firewall allows.
If you can use UPnP, do that as it will do the port forwarding automatically.
I open the Port 4994 tcp with Port 21000 (extern for firewall) open the Port 4993 udp (with Port 22000)
in IPV4The Flex is also exposed host - free for Internet an has a one extern IP Adress.
But i can install Version 2. I have a ticket, but it doesn't help me. I think a german OM hat the same Fritzbox and a better idea ?!