Here are the ports you need to open.
For my DI-524 and Linksys BFSR41 router I setup a manually configured IP for my gaming PC. For my Zoom 6X router, you can setup a fixed DHCP IP (ie. DHCP will always used the configured IP for the given MAC address of your gaming PC's network card). Also, make sure you do not have any firewall settings enabled on your router or on your Windows OS. For example, the Zoom 6X has an intrusion detector and when it was enabled I could not get into the dynaverse network.