D-Link DIR-645 [81/134] Firewall settings

77D-Link DIR-645 User Manual

Section 3 - Software Conguration

Firewall Settings

A rewall protects your network from the outside world. The router 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 can

enable DMZ. DMZ is short for Demilitarized Zone. This option will expose the chosen computer completely to the outside world.

The following parameters will be available for conguration:

Enable SPI: Check the Enable SPI box to enable the SPI (Stateful

Packet Inspection, also known as dynamic packet

ltering) feature. Enabling SPI 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.

The following parameters will be available for conguration:

UDP Endpoint

Filtering:

Select the appropriate NAT UDP endpoint

ltering method here. Options to choose from are

‘Endpoint Independent’, ‘Address Restricted’, and

‘Port And Address Restricted’.

TCP Endpoint

Filtering:

Select the appropriate NAT TCP endpoint ltering

method here. Options to choose from are

‘Endpoint Independent’, ‘Address Restricted’, and

‘Port And Address Restricted’.

The following parameters will be available for conguration:

Enable anti-

spoof checking:

Tick this option to enable the anti-spoof checking

feature.