Hello i have a problem with my nat type. few day a go my nat type whas open but now is my nat type strict and i did open all the ports that i have found on the net. here do i have a picture of my open ports -> http://i43.tinypic.com/ok7hjp.png
I recommend also settings up a static IP address, as it may change. You can find other connection advice here: Activision Support. Since you've already set up your ports, there isn't a need to use UPnP or DMZ as there are methods that adjust your port settings as well. The Static IP will assign your console a single IP address so the port forwarding process won't need to be reconfigured. If you need help in the future, feel free to start another thread.