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they must be on the same network segment.
Local Port
Enter the local port number. Range is 1 to 65,535.
3.4.6 Port Triggering
Port Triggering is a configuration option on a router - in this case, the CPE - if it is operating
in NAT mode as the WAN interface type
port to build a connection, the CPE will forward the data to the forward port.
To configure the feature, click on the check box next to Enable and then click on ADD LIST to
enter the service type, protocol, trigger port, and forward port (Figure 3-30).
Figure 3-30 Port Triggering
3.4.7 ALG
The Application Layer Gateway (ALG) function provides a security component that
augments a firewall or the NAT used by the CPE (if WAN Network Mode = NAT). It allows
customized NAT traversal filters to be plugged into the gateway to support address and port
(section
2.2.2). When an application uses a trigger
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