Netgear FVL328 FVL328 Reference Manual - Page 45

Port Triggering, than a response. As such

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Model FVL328 ProSafe High-Speed VPN Firewall Reference Manual Revision 2 If you know that the Ethernet port on your broadband modem supports 100BaseT, select 100M; otherwise, select 10M. Use the half-duplex settings unless you are sure you need full duplex. Port Triggering Port Triggering is used to allow applications which would otherwise be blocked by the firewall. Using this feature requires that you know the port numbers used by the Application. Once configured, operation is as follows: 1. A PC makes an outgoing connection using a port number defined in the Port Triggering table. 2. This Router records this connection, opens the 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 PC's request, and responds using a different port number. 4. 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.) Note • Only 1 PC can use a Port Triggering application at any time. • After a PC has finished using a Port Triggering application, there is a Time-out period before the application can be used by another PC. This is required because this Router cannot be sure when the application has terminated. Figure 4-3: Port Triggering WAN and LAN Configuration 4-9 May 2004, 202-10030-02

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Model FVL328 ProSafe High-Speed VPN Firewall Reference Manual Revision 2
WAN and LAN Configuration
4-9
May 2004, 202-10030-02
If you know that the Ethernet port on your broadband modem supports 100BaseT, select 100M;
otherwise, select 10M. Use the half-duplex settings unless you are sure you need full duplex.
Port Triggering
Port Triggering is used to allow applications which would otherwise be blocked by the firewall.
Using this feature requires that you know the port numbers used by the Application.
Once configured, operation is as follows:
1.
A PC makes an outgoing connection using a port number defined in the Port Triggering table.
2.
This Router records this connection, opens the 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 PC’s request, and responds using a different port number.
4.
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.)
Note
•
Only 1 PC can use a Port Triggering application at any time.
•
After a PC has finished using a Port Triggering application, there is a Time-out period before
the application can be used by another PC. This is required because this Router cannot be sure
when the application has terminated.
Figure 4-3:
Port Triggering