Xbox connects to network but not internet

[sxfsDF]

Hello, my xbox connects to my network but not the internet. Also, all my computers and laptops can use the internet perfectly. What is the problem?

 

[mobrocket]

what are your system setting on xbox?

do u have the proper ports opened on router?
do u have the xbox set to a static ip inside the dchp pool?
is the mac address of the xbox being blocked by router?

if u set your xbox to automatic setting, and reboot your modem/router it should work