Can't connect online Rise of Nations

[DurnIt]

I am trying to play Rise of Nations online. I can play a solo game without a problem, but am unable to connect to online games. I think the problem may be that my external IP address can't be pinged (externally). I have a Linksys WRT160 router, Comcast is my internet provider, and I have set up Port Range Forwarding on the Gaming tab of the router, but so far, that hasn't worked. Any ideas?

 

[tipstir]

What about your firewall you use on your PC? Have you open the ports for what you need to use?

 

[DurnIt]

What about your firewall you use on your PC? Have you open the ports for what you need to use?

I have Rise of Nations checked to be an Allowed Program or Feature on the Windows firewall. I don't see where to open the ports there, though.