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How do I set up Port Forwarding on my Zyxel 1432?

1. Open an Internet browswer
2. Enter into the address bar. 
3. Within the ZyXEL interface, scroll over Network Settings, and at the bottom of the screen click on NAT. 
4. Click the Applications tab at the top of the screen, then click the Add new application button. 
5. This will direct you to the below window. Here you can view existing devices and services for which Port Forwarding has already been configured. To see whether your desired service or application has been configured, select the Application Category drop-down. 
6. Select the type of device or service you are trying to configure. The click Application Forwarded to check the drop-down list for your application. 
     a. If you can locate your desired service within the list, select it and click the Apply button to save changes. Port Forwarding should now be enabled.
         If you cannot locate your desired service within the list, continue to Step 7. 
     b. If your desired service or device has not already been confiured for port forwarding, click the X in the top-right corner of the window to exit. Then click the Port Forwarding tab at the top of the window. 

7. At the top of the screen, click the Port Forwarding tab, then click the add new rule button. 
8. This will direct you to the below screen. 
Click to check the Active box. 
  • Within the Service Name field, enter an easily recognizable phrase to describe the application you're configuring. 
  • Click the WAN Interface field to view a drop-down list. From this list, select the type of WAN Interface you're currently using. 
  • You will now need to enter the External Start Port, and External End Port numbers. These numbers should be provided by the device or service's manufacturer (e.g. Xbox, PlayStation, Slingbox, etc.). It is important to note that your device or service may require multiple ports or port ranges to remain open. Each port (an individual number) or port range (a series of consecutive numbers, such as 501-509) will have to be entered individually, following  process laid out in Steps 7 and 8. Additionally, each of these ports will utilize a specific protocol. 
  • If you are entering an individual port: Enter the port number into the External Start Port and External End Port fields. Unless otherwise specified by the manufacturer, you will also enter this number into the Internal Start Port and Internal End Port fields. 
  • If you are entering a port range: Enter the lowest number of the port range into the External Start Port field and the highest number of the range into the External End Port field. Unless otherwise specified by the manufactuer, you will also enter these numbers into the corresponding Internal Start Port and Internal End Port fields.