Tonight me and my brother tried play Halo for the first time since he has moved into his new apartment. It turns out that he has a Moderate NAT type and we can't connect to each other. My NAT is set to Open and it was my understanding that an Open NAT would be able to connect to a Moderate NAT with little problem. But that is not the case. Unfortunately, it is not likely that he will be able to reconfigure his network settings because he is using his buildings Router/Modem, which he doesn't have access to. Is there anything that we can do without having access to the Router/Modem?