Port Triggering - NETGEAR Wireless-N User Manual

RangeMax Dual Band Wireless-N Modem Router DGND3300 User Manual

Port Triggering

Port triggering is an advanced feature that can be used to easily enable gaming and other Internet
applications that would otherwise be blocked by the firewall. Using this feature requires that you
know the port numbers that are used by the application.
Note: For information about port forwarding and port blocking, see
page 3-7."
Once configured, port triggering operation is as follows:
1. A PC makes an outgoing connection using a port number defined in the Port Triggering table.
2. The modem router records this connection, opens the incoming port or ports associated with
this entry in the Port Triggering List, and associates them with the PC.
3. The remote system receives the PCs request, and responds using a different port number.
4. The modem router matches the response to the previous request, and forwards the response to
the PC. (Without port triggering, this response would be treated as a new connection request
rather than a response. As such, it would be handled in accordance with the port forwarding
rules.)
Note: Only one PC can use a port triggering application at any time. After a PC has
finished using a port triggering application, there is a short time-out period before
the application can be used by another PC.
To configure port triggering:
1. In the main menu, under Security, select Port Triggering. The Port Triggering screen displays.
3-13
v1.0, January 2010
"Firewall Rules" on
Protecting Your Network