DGFV338 ProSafe Wireless ADSL Modem VPN Firewall Router Reference Manual
See “Using Rules to Block or Allow Specific Kinds of Traffic” on page
Port Triggering
Port triggering allows some applications to function correctly that would otherwise be partially blocked by the firewall. Using this feature requires that you know the port numbers used by the Application.
Once configured, operation is as follows:
•A PC makes an outgoing connection using a port number defined in the Port Triggering table.
•This Router records this connection, opens the additional INCOMING port or ports associated with this entry in the Port Triggering table, and associates them with the PC.
•The remote system receives the PCs request and responds using the different port numbers that you have now opened.
•This 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.
–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
See “Setting up Port Triggering” on page
VPN Tunnels
The wireless firewall permits up to 50 VPN tunnels at a time. Each tunnel requires extensive processing for encryption and authentication.
See Chapter 5, “Virtual Private Networking” for the procedure on how to use this feature.
Using QoS to Shift the Traffic Mix
The QoS priority settings determine the priority and, in turn, the quality of service for the traffic passing through the firewall. The QoS is set individually for each service.
•You can accept the default priority defined by the service itself by not changing its QoS setting.
Router and Network Management |