ZyXEL - NBG420N (ZyXEL Firmware)
Port Forwarding Guide
For automatic port forwarding try Simple Port Forwarding
Some routers & modems work best with port forwarding if you have a static
Manually set your network interface card ( NIC ) to use a static ip address.
You can also download my FREE Simple Static IP tool to set it for you.
Open your favorite web browser and input your routers ip address in the address bar.
Please note that you must have the http:// in order to connect to your router/modem properly.
Need help finding you router IP address? Click here
Enter the routers password here and click the Login button.
If you don't know it you can check our list of default router and modem password list here.
If you have changed it and don't remember it you may have to reset your device to factory default using the reset button on most routers.
On the next page click the "Go to Advanced Setup" link.
Once logged into your router click on the "Network" link on the left of the page.
Once the page loads click the "NAT" link on the left listed under "Network".
Now click on the "Application" tab at the top of the page.
Once the page loads listed under "Add Application Rule" check the "Active" box.
Now for "Service Name" give your rule a name, and select "User Defined" from the list.
For "port" enter the port you want to forward.
For "Server IP Address" enter the IP of the computer you want to forward to.
Now Click the "Apply" button.
Repeat Step 5 to add more ports.