DGFV338 ProSafe Wireless ADSL Modem VPN Firewall Router Reference Manual
6-4 Router and Network Management
v1.0, April 2007
You can bypass keyword blocking for trusted domains by adding the exact matching domain
to the list of T rusted Domains. Access to the domains on this list by PCs even in the groups for
which keyword blocking has been enabled will still be allowed without any blocking.
• Web component block ing – You can block the following Web componen t types: Proxy, Java,
ActiveX, and Cookies. Sites on the Trusted Domains list are still subject to Web component
blocking when the blocking of a particular Web component has been enabled.
See “Blocking Internet Sites” on page 4-24 for the procedure on how to use this feature.
Source MAC Filtering
If you want to reduce outgoing traffic by preventing Internet access by certain PCs on the LAN,
you can use the source MAC filtering feature to drop the traffic received from the PCs with the
specified MAC addresses. By default, this feature is disabled; all traffic received from PCs with
any MAC address is allowed.
See “To block keywords or Internet domains:” on page 4-27 for the procedure on how to us e this
feature.
Wireless Firewall Features That Increase Traffic
Features that tend to increase WAN-side loading are as follows:
• Port forwarding
• Port triggering
•VPN tunnels
Port Forwarding
The firewall always blocks DoS (Denial of Service) attacks. A DoS attack does not attempt to steal
data or damage your PCs, but overloads your Internet connection so you can not use it (i.e., the
service is unavailable). You can also create additional firewall rules that are customized to block or
allow specific traffic.
You can control specific inbound traffic (i.e., from WAN to LAN and from WAN to DMZ).
Inbound Services lists all existing rules for inbound traffic. If you have not defined any rules, only
the default rule will be listed. The default rule blocks all inbound traffic.
Warning: This feature is for Advanced Administrators only! Incorrect configuration
will cause serious problems.