Im having problems with my own Arma 2 server running on Windwos server 2003 and i have a D-link DIR655 router.
I have searched the forum and opened all the ports that they say you need to open and still i get "Connection failed" when trying to join my server, if i try to join the server under LAN it works fine.
I hade a Arma server up and running and the correct ports was open and that server run with no problems. I feel that im missing out on some ports or something like that.
This are the ports that i have opened:
TCP and UDP
2300-2400,47624
And i tryed: 53, 80, 88, 2302, 2304, 2305, 2306, 2074, 3074
Only UDP
28800-28900
I can join servers without any problems, Iam starting to think that this will never work with a router :(