DGFV338 ProSafe Wireless ADSL Modem VPN Firewall Router Reference Manual
4-28 Security and Firewall Protection
v1.0, April 2007
A valid MAC address is 12 fiel ds; 0 to 9 and a to f. For example: 00:e0:4c:69:0a:11.
4. Click Apply. The outbound traffic from the specified MAC addresses will be dropped
To delete a MAC Address or all MAC addresses:
• Check the radio box adjacent to the MAC Address to be deleted and click Delete or
• Click select all to select all the MAC Addresses and click Delete.
Setting up Port Triggering
Port triggering is used to allow some applications to function correctly that would otherwise be
partially blocked by the firewall when the router is in NAT mode. Some applications require that
when external devices connect to them, they receive data on a specific port or range of ports. THe
router must send all incoming data for that application only on the required port or range of ports.
Using this feature requires that you know the port numbers used by the application.
Port triggering allows computers on the private network (LAN) to request that one or more ports
be forwarded to them. Unlike basic port forwarding which forwards ports to only one IP address,
port triggering waits for an outbound request from the private network on one of the defined
outgoing ports. It then automatically sets up forwarding to the IP address from where the request
Figure 4-18
Note: For additional ways of restricting outbound traffic, see “Order of Precedence
for Rules” on page 4-17.