Tenda V1200 - Port Triggering

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4.5.2 Port triggering
Some applications, such as games, video conferencing, and remote access, require that specific
ports in the router's firewall be opened for access by the applications. Port triggering opens an
incoming port when the user's computer is using a specified outgoing port for specific traffic. This
allows computers behind a NAT-enabled router on a local network to provide services. Port
triggering triggers can open an incoming port when a client on the local network makes an outgoing
connection on a predetermined port or range of ports.
Choose Advanced Setup > NAT > Port Triggering to enter the configuration page.
Click Add to configure the function.
Parameter description
Parameter
Description
Use Interface
Select a WAN connection to which the rules apply. When there is only one WAN
connection available, the rules will be automatically applied to it.
Application Name

Select an application: Allows you to select an existing service from the
drop-down list.

Custom application: Allows you to customize a service.
Trigger Port Start/Trigger
Port End
The port range for an application to initiate connections.