User`s manual

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 Use Interface: It indicates which WAN connection the configured rules are to be
applied to. When there is only one configured WAN connection available, system will
select it automatically.
 Application Name: There are two options available:
(1) Select an application: allows you to select an existing application from the drop-down
list box.
(2) Custom application: allows you to define an application yourself.
 Trigger Port Start/ Trigger Port End: The port range for application programs to initiate
connections.
 Trigger Protocol: There are 3 options: TCP, UDP and TCP/UDP. We recommend you
to select TCP/UDP if you are not sure about which protocol to choose.
 Open Port Start/ Open Port End: the port range that will be automatically enabled by
the built-in firewall when connections initiated by application programs succeed.
For example: You have created a server on router’ s LAN side that can automatically
download material from Internet (via port: 9090) and share its data with other users. And
you want Internet users to download data from your server (via port: 9999). For
configurations, follow the instructions below:
To enter the port triggering interface, click “ Advanced Setup” --- “ NAT” ---“ Port
Triggering” , and then click the “ Add” button to configure the page below (Refer to the
parameters configured on the page below):
When your server initiates a connection toward the server on Internet via port: 9090, the
router’ s firewall will automatically open port: 9999 to let Internet users access your server
to download data via this port: 9999.