User manual

Port Triggers
The Port Triggers page allows you to configure dynamic triggers to specific devices on the LAN. This
allows for special applications that require specific port numbers with bi-directional traffic to
function properly. Applications such as video conferencing, voice, gaming, and some messaging
program features may require these special settings.
Port Triggers are similar to Port Forwarding except that they are not static ports held open all the
time. With the port triggering function, the cable modem/router detects outgoing data on a specific
IP port number and opens corresponding target ports for incoming data. If no outgoing traffic is
detected on the Trigger Range ports for 10 minutes, the Target Range ports will close.
To access the Port Triggers page:
1 Click Advanced in the menu bar.
2 Then click the Port Triggers submenu.
Figure 19 shows an example of the menu and Table 14 describes the items you can select.
Figure 19. Example of port Triggers Page
To activate a port trigger
1 Enter the trigger and target ports range for the Internet traffic to forward to.
2 Select the forwarding protocol(s).

49