NETGEAR N600 DGND3800B User Manual page 80

N600 Wireless Dual Band Gigabit VDSL2 Modem Router DGND3800B
• More than one local computer needs port forwarding for the same application (but not
simultaneously).
• An application needs to open incoming ports that are different from the outgoing port.
When port triggering is enabled, the modem router monitors outbound traffic looking for a
specified outbound "trigger" port. When the modem router detects outbound traffic on that
port, it remembers the IP address of the local computer that sent the data. The modem router
then temporarily opens the specified incoming port or ports and forwards incoming traffic on
the triggered ports to the triggering computer.
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), you should also
enable Universal Plug and Play (UPnP).
To configure port triggering, you need to know which inbound ports the application needs,
and the number of the outbound port that will trigger the opening of the inbound ports. You
can usually determine this information by contacting the publisher of the application or user
groups or news groups.
To enable port triggering:

1. Select ADVANCED > Port Forwarding/Port Triggering.
2. Select the Port Triggering radio button.
3. Clear the Disable Port Triggering check box.
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