D-Link DIR-655 - Xtreme N Gigabit Router Wireless - Firewall Settings

36D-Link DIR-655 User Manual
Section 3 - Conguration
SPI (Stateful Packet Inspection, also known as dynamic packet
ltering) helps to prevent cyber attacks by tracking more state
per session. It validates that the trac passing through the
session conforms to the protocol.
Select one of the following for TCP and UDP ports:
Endpoint Independent - Any incoming trac 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 trac must match the IP address
of the outgoing connection.
Address + Port Restriction - Incoming trac 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 rewall protects your network from the outside world. The D-Link DIR-655 oers 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.