please follow the steps to fix you issue
1.upgrade firmware on router
link for latest firmware
http://kb.netgear.com/app/answers/detail/a_id/863
follow steps to upgrade firmware on router
1.Log in to the router using a Web broswer. The URL is
http://192.168.1.1 ( if you did not change the router’s IP address ).
2.Click Maintenance > Router Upgrade
3.Click Browse and find the file you just downloaded.
4.Click Upload. Do not interrupt the upgrade while the router does this step. The router reboots when the upgrade is done.
5.After the router boots up, log in the router again.
6.You MUST Reset the router to default settings after upgrading the firmware
7.Click Maintenance > Backup Settings
8.Click Erase. The router reboots when the Erase operation is done.
9.If you would like to check that the upgrade was successful, log in to the router again at
http://192.168.1.1, and check the firmware version.
10Re-configure the router with the settings you saved in step 1. Optionally, You can use the Smart Wizard configuration assistant on the CD to reconfigure the router.
after all this login to router
under advance you will WAN setup there will NAT ,you need to click on open then apply
regards
prakash
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