Firewall Settings - D-Link AC1750 User Manual

Section 3 - Configuration
A firewall protects your network from the outside world. The DIR-868L 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:
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.
NAT Endpoint
Select one of the following for TCP and UDP ports:
Filtering:
Endpoint Independent - Any incoming traffic sent to an open port will be
forwarded to the application that opened the port. The port will close if idle
for 5 minutes.
Address Restricted - Incoming traffic must match the IP address of the
outgoing connection.
Port and Address Restricted - Incoming traffic must match the IP address and
port of the outgoing connection.
Anti-Spoof
Enable this feature to protect your network from certain kinds of "spoofing"
Checking:
attacks.
Enable DMZ:
If an application has trouble working from behind the router, you can expose
one computer to the Internet and run the application on that computer.
Note: Placing a computer in the DMZ may expose that computer to a variety of
security risks. Use of this option is only recommended as a last resort.
DMZ IP Address:
Specify the IP address of the computer on the LAN that you want to have unrestricted Internet communication. If this computer
obtains it's IP address automatically using DHCP, be sure to make a static reservation on the Setup > Network Settings page so
that the IP address of the DMZ machine does not change.
D-Link DIR-868L User Manual

Firewall Settings

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