Firewall Setting - D-Link DIR-640L User Manual

Section 4 - Advanced
A firewall protects your network from the outside world. The DIR-640L 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:
Check to enable Stateful Packet Inspection to allow
packets from known active connections while rejecting
all others.
Enable Anti-Spoof
Check to automatically check the origins of packets
Checking: against a blacklist of known spoofers.
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 its 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.
Firewall Rules: Choose whether to Allow or Deny the addresses you list
below.
Enter a name to identify the firewall rule.
Name:
Choose whether to Allow or Deny all of the rules listed below.
Action:
D-Link DIR-640L User Manual

Firewall Setting

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