Advanced Settings
60
Wireless Cable Voice Gateway CG3700EMR-1CMNDS
While port forwarding creates a static mapping of a port number or range to a single local
computer, port triggering can dynamically open ports to any computer that needs them and
can close the ports when they are no longer needed.
Note: If you use applications such as multiplayer gaming, peer-to-peer
connections, real-time communications such as instant messaging,
or remote assistance (a feature in Windows XP), enable Universal
Plug and Play (UPnP). See Remote Management on page 63.
To set up port triggering, you must know which inbound ports the application needs. Also,
you must know the number of the outbound port that triggers the opening of the inbound
ports.
You can usually find this information by contacting the publisher of the application or
user groups or newsgroups.
ļ To set up port triggering:
1. Select ADV
ANCED > Advanced Setup > Port Forwarding/Port Triggering.
2. Select the Port T
riggering radio button.
3. Clear the Disable Port Triggering check box if it is selected.
Note: If the Disable Port Triggering check box is selected after you configure
port triggering, port triggering is disabled. However, any port triggering
configuration information you added to the gateway is retained even though it
is not used.
4. In the Port
Triggering Time-out field, enter a value up to 9999 minutes.
This value controls the inactivity timer for the designated inbound ports. The inbound
ports close when the inactivity time expires.
This step is required because the gateway
cannot be sure when the application has terminated.
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