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A firewall protects your network from the outside world. The router offers a firewall type functionality. The SPI feature helps
prevent cyber attacks. Sometimes you may want a computer exposed to the outside world for certain types of applications.
If you choose to expose a computer, you can enable DMZ. DMZ is short for Demilitarized Zone. This option will expose the
chosen computer completely to the outside world.
You can use Firewall rules to allow or deny traffic passage through the router. You can specify a single port by utilizing the
input box at the top or a range of ports by utilizing both input boxes. DMZ means “Demilitarized Zone”. DMZ allows comput-
ers behind the router firewall to be accessible to Internet traffic. Typically, your DMZ would contain Web servers, FTP servers
and others.
You can configure the following parameters:
Enable SPI:
Check the Enable SPI box to enable the SPI (Stateful Packet Inspection, also known as
dynamic packet filtering) feature. Enabling SPI helps to prevent cyber attacks by tracking
more states per session. It validates that the traffic passing through the session conforms
to the protocol.
In the
DMZ Host
section, you can configure the DMZ settings for this router.
You can configure the following parameters:
Enable DMZ:
Check this option to enable the DMZ feature.
DMZ IP Address:
Enter the IP address of the computer on the LAN that you want to have unrestricted Inter-
net communication into the DMZ IP address field. To specify an existing DHCP client,
use the Computer Name drop-down to select the computer that you want to make a DMZ
host. If selecting a computer that is a DHCP client, be sure to make a static reservation in
the Setup > Network Settings page so that the IP address of the DMZ machine does not
change.
Click the
Save Settings
button to accept the changes.
Click the
Don’t Save Settings
button to discard the changes.
Summary of Contents for CY-SWR1100
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