Port Triggering - NETGEAR ProSafe FVS338 Reference Manual

Reference Manual for the ProSafe VPN Firewall 50 FVS338
Table 7-6. Source MAC address filter
Item Description
Activation • Enable the source MAC filter by ticking the check box.
• Press APPLY.
Add • Now add the MAC Addresses from which the traffic should be dropped by clicking
• Press APPLY.
Disable • To Disable Source MAC Filter, uncheck Source MAC Filter Enable check box.
• If the filter has to be avoided for a specific MAC address in the database, select the

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 1 PC can use a Port Triggering application at any time.
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on ADD button.
Each time one MAC Address entry can be added.
MAC Address input should be entered with ':' seperator. A valid MAC address will
have 0 to 9 and A to F.
Example: 00:e0:4c:69:0a:11
Now the traffic from the specified MAC addresses will be dropped.
The list of the MAC Addresses can be kept in the database.
MAC address entry and click on Delete button.
January 2005
Firewall Protection and Content Filtering