NETGEAR DGFV338 ProSafe Reference Manual page 164

DGFV338 ProSafe Wireless ADSL Modem VPN Firewall Router Reference Manual
– Any: The rule applies to all Internet IP address.
– Single address: The rule applies to a single Internet IP address.
– Address range: The rule is applied to a range of Internet IP addresses.
• Destination Address. These settings determine the destination IP address for this rule which
will be applicable to incoming traffic. This rule is applied only when the destination IP address
of the incoming packet matches the IP address of the selected WAN interface or the specific IP
address entered in this field. Selecting ANY enables the rule for any IP in the destination field.
• Services. You can specify the desired Services or applications to be covered by this rule. If the
desired service or application does not appear in the list, you must define it using the Services
menu (see "Services" on page
• Schedule. You can specify whether the rule is to be applied on the Schedule 1, Schedule 2, or
Schedule 3 time schedule (see
See "Using Rules to Block or Allow Specific Kinds of Traffic" on page 4-2
how to use this feature.
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 time-out period
before the application can be used by another PC. This is required because the firewall
cannot be sure when the application has terminated.
See "Configuring Port Triggering" on page 4-27
6-6
6-3).
"Schedule" on page 6-3).
for the procedure on how to use this feature.
v1.0, May 2008
for the procedure on
Router and Network Management