Linksys WRVS4400N - Manual (Page 64)

56 Chapter 6: Setting Up and Configuring the Router
Firewall Tab
Wireless-N Gigabit Security Router with VPN
Port Range Triggering
This is one of the NAPT (Network Address Port Translation) feature. Port Range Triggering is used for special
applications that can request a port to be opened on demand. For this feature, the Wireless Router will watch
outgoing packets for specific port numbers. This will trigger the Wireless Router to allow the incoming packets
within the specified forwarding range and forward those packets to the triggering PC. One of the example
applications is QuickTime. It would use port 1000 for outgoing packets and 2000 for incoming packets.
Application Name. Enter the name of the application you wish to configure.
Triggered Range. For each application, list the triggered port number range. These are the ports used by
outgoing traffic. Check with the Internet application documentation for the port number(s) needed. In the first
field, enter the starting port number of the Triggered Range. In the second field, enter the ending port number of
the Triggered Range.
Forwarded Range. For each application, list the forwarded port number range. These are the ports used by
incoming traffic. Check with the Internet application documentation for the port number(s) needed. In the first
field, enter the starting port number of the Forwarded Range. In the second field, enter the ending port number of
the Forwarded Range.
Enabled. Select Enabled to enable port range triggering for the relevant application.
Change these settings as described here and click Save Settings to apply your changes, or click Cancel
Changes to cancel your changes. Help information is displayed on the right-hand side of the screen, and click
More for additional details.
Figure 6-39: Port Range Triggering