ProSafe Gigabit 8 Port VPN Firewall FVS318G Reference Manual
To edit an IP/MAC binding rule, click Edit adjacent to the entry. The following fields of an existing IP/MAC binding rule can be modified:
•MAC Address. Specify the MAC Address for this rule.
•IP Addresses. Specify the IP Address for this rule.
•Log Dropped Packets. Specify the logging option for this rule.
To remove an entry from the table, select the IP/MAC binding entry and click Delete.
To see the counter that shows the packets that were dropped because of
Configuring Port Triggering
Port triggering allows some applications to function correctly that would otherwise be partially blocked by the VPN firewall when it functions 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 VPN firewall 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 preconfigured 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 that sent the request. When the application ceases to transmit data over the port, the VPN firewall waits for a timeout interval and then closes the port or range of ports, making them available to other computers on the private network.
Once configured, port triggering operates as follows:
1.A PC makes an outgoing connection using a port number defined in the Port Triggering table.
2.The VPN firewall 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.
3.The remote system receives the PCs request and responds using the different port numbers that you have now opened.
4.The VPN firewall matches the response to the previous request, and forwards the response to the PC.
Firewall Protection and Content Filtering |
