user manual
37D-Link DIR-651 User Manual
Section 3 - Conguration
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 trac passing through the session conforms
to the protocol.
Note: When this option is enabled, hardware NAT
will be disabled automatically.
Select one of the following for TCP and UDP ports:
Endpoint Independent - Any incoming trac 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 trac must match
the IP address of the outgoing connection.
Address + Port Restriction - Incoming trac must
match the IP address and port of the outgoing
connection.
Enable this feature to protect your network from
certain kinds of “spoong” attacks.
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.
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 Basic > DHCP page so that the IP address
of the DMZ machine does not change.
Enable SPI:
NAT Endpoint
Filtering:
Anti-Spoof Check:
Enable DMZ Host:
DMZ IP Address:
Firewall Settings
A rewall protects your network from the outside world. The D-Link DIR-651 oers a rewall 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 cam enable DMZ. DMZ is short for Demilitarized Zone. This option will expose the chosen computer completely to the outside world.