What is your subnet mask set to? Try setting it to 255.255.255.0
What port are you using, is it the same as the port your blockland server is using?
God damn you're annoying.
God damn you're annoying.Anyways, a quick google search for "Apple AirPort port forwarding" suggests that you need to use the AirPort Utility.
Guys, I need a solution WITHOUT changing router settings, ok? :)
Well, THAT didn't work! Why isn't Port Forwarding working?