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If you have a local client PC that cannot run an Internet application (e.g. Games) properly from
behind the NAT firewall, then you can open the client up to unrestricted two-way Internet access
by defining a DMZ Host. The DMZ function (see
Figure 26
) allows you to re-direct all packets
going to your WAN port IP address to a particular IP address in your LAN. The difference
between the virtual server and the DMZ function is that the virtual server re-directs a particular
service/Internet application (e.g. FTP, websites) to a particular LAN client/server, whereas DMZ
re-directs all packets (regardless of services) going to your WAN IP address to a particular LAN
client/server.
E. Firewall
Configuration
The Firewall selection of the On-Q Router provides an extensive array of firewall protection
capability by restricting connection parameters, thus limiting the risk of hacker attack, and
defending against a wide variety of common Internet attacks.
The Firewall Options selection screen (see
Figure 27
) enables the firewall to block common
hacker attacks, including Denial of Service, Ping of Death, Port Scan and Sync Flood.
If Internet
attacks occur the router can log the events.
Figure 26
Figure 27
