Halo 3 wont find players then restarts?

[Help me]

I just got halo 3 for Christmas and it was working perfectly fine yesterday but for some reason today when i try to play a ranked game it says "looking for player.." for about 10 minutes then it restarts. Why is it doing this, I mean it was running fine and only took a minute yesterday to find players but wont let me play online at all now. My xbox is on a wireless network. but theres nothing wrong with that so i dont think im the only one.

 

[thistimearound5765]

It depends on what kind of game you're trying to get into and what level you are. Try switching games like slayer, doubleteam... ect. Just be patient.

 

[Captain Pessimism]

your router NAT type is set to strict or moderate.

Go into your router settings and try and change it to "open".