Does anyone know what ports I should open on my router for Call Of Duty Black Ops.
I cant invite or be invited by anyone at the moment, and i cant find them anywhere. Also I cant be the host of server on the games.
PS: if the problem isn't the ports say me what is plz.
Yeap, those are the ports that are used. However, as the other person mentioned, use Modern Warfare 2 to get NAT Type: Open. However, there are several things you need to do first (if you want to do it this way:
Set up a static IP Adress for your PS3, which is very easy, then get Modern Warfare 2 (I just borrowed a friends copy). Insert MW2, go to the multiplayer screen [Just far enough, so you can see your NAT Type]. Once you see that your NAT Type says Open. Eject the disc directly. DO NOT quit the game using the PS3, just eject it on the multiplayer screen, while it's running. Then insert Black Ops, and you should now have NAT Type: Open.
If you didn't have NAT Type: Open on MW2, then your router needs proper configuring.
The general problem with Black Ops, is that, even though you may have an Open connection, the game doesn't recognise that. I think Treyach should add a feature within the options to refresh or configure this.
If you find that it doesn't work when you turn your PS3 on again, you may have not correctly set a Static IP address on your PlayStation.
If all else fails, chances are you are using a Thompson Router. In which case, I suggest getting a new one.