If you don't know what Port Forwarding is yet, you might want to start by reading our What is Port Forwarding guide.
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To setup port forwarding on the Netgear RT388 router your device needs to have a static IP address. You should complete one of the following steps first:
Now that you have setup a Static IP Address on your device, please enter the IP address that you assigned to your device here:
You should see a box prompting you for your Netgear RT388 password. Enter the password now.
Click the Ok button to log in to your Netgear RT388 router.
Please visit our Default Netgear Router Passwords page if the username and password shown below did not work for you.
If you can't login to your router because you forgot your Netgear RT388 router password, use our How to Reset a Router Password guide to set your Netgear RT388 router back to its factory settings.
Select SUA Server Setup from the list.
We will list a series of lines here that will show you exactly how to forward the ports you need to forward. XBOX360 Sin City requires you to forward the following ports: 3074. Go ahead and enter the settings shown above into the Multiple Server Configuration menu.
|Port #||IP Address|
Now that you have forwarded ports for XBOX360 Sin City on the Netgear RT388 you should test to see if your ports are forwarded correctly.