D-Link DIR-412 manual Firewall Settings, Enable SPI DMZ Host

Section 3 - Configuration

Firewall Settings

A firewall protects your network from the outside world. The D-Link DIR-412 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.

Enable SPI:

DMZ Host:

Firewall Rules:

SPI (Stateful Packet Inspection, also known as dynamic packet filtering) helps to prevent cyber attacks by tracking more state per session. It validates that the traffic passing through the session conforms to the protocol.

Check the Enable DMZ box and specify the IP address of the computer on the LAN that you want to have unrestricted Internet communication in the DMZ IP Address field. Use the drop-down menu to specify a host

that currently has a DHCP lease from the DIR-412. If this computer has

obtained its IP address automatically using DHCP, be sure to make a static reservation on the System > Network Settings page so that the IP address of the DMZ machine does not change.

Use this section to create rules that deny or allow traffic from passing through the device. See the following page for information on how to create firewall rules.

D-Link DIR-412 User Manual 49