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43D-Link DIR-625 User Manual
Section 3 - Configuration
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.
Select one of the following for TCP and UDP ports:
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.
Address + Port Restriction - Incoming traffic must match the IP
address and port of the outgoing connection.
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:
Enable DMZ Host:
IP Address:
Firewall Settings
A firewall protects your network from the outside world. The D-Link DIR-625 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 cam enable DMZ. DMZ is short for Demilitarized Zone.
This option will expose the chosen computer completely to the outside world.