I have been attempting to open a port to host an Arma 3 server but have been unable to. I have a logged into my router, and opened the ports, but they remain closed when I try to test the ports.
I have a rather unusual setup for my connection, I’ll admit, where I use Ethernet, but its through a Powerline Ethernet Adapter. Could that be a problem with port forwarding?
I use an older router, a Motorola MT7700, I think, (Im not at home to check atm.) I run Linux Mint, it has no problems afaik.


What port? Some ISPs block some ports. Also, is the server running if you access from within the network?
Ports 2302 and 2303, I have been able to connect to the server over LAN, but it has been a while since I tested it again over LAN. I shall attempt that again.