7. Click the Add Custom Service button.
8. Specify a new port forwarding rule with a custom service or application as described in the following table.
Enter the name of the custom service or application.Service Name
Select the protocol (TCP or UDP) that is associated with the service or application.
If you are unsure, select TCP/UDP.
Enter the starting port number for the service or application.External Starting Port
If the service or application uses a single port, enter the same port number in the External
Ending Port field.
If the service or application uses a range of ports, enter the ending port number of the range
in the External Ending Port field.
External Ending Port
Specify the internal ports by one of these methods:
•If the external and internal ports are the same, leave the Use the same port range for
Internal port check box selected.
•If the external and internal ports are different, in the Internal Starting Port field, enter
the starting port number for the service or application. The Internal Ending Port field is
Internal Starting Port
Internal Ending Port
Either enter an IP address in the Internal IP address field or select the radio button for an
attached device that is listed in the table.
The modem router applies the new rule to the device that you select.
Internal IP address
9. Click the Apply button.
Your settings are saved. The rule is added to the table on the Port Forwarding / Port Triggering page.
Manage Port Forwarding and Port Triggering
Nighthawk X4S AC2600 WiFi VDSL/ADSL Modem Router Model D7800