79D-Link DIR-879 User Manual
Section 4 - Conguration - Router Mode
Firewall Settings
The router’s rewall protects your network from malicious attacks over the 
Internet. In the Features menu on the bar on the top of the page, click Firewall 
Settings. Click Advanced Settings... to expand the list and see all of the 
options. 
Enable DMZ: Enable or disable Demilitarized Zone (DMZ). This completely exposes 
the client to threats over the Internet, and is not recommended in 
ordinary situations.
DMZ IP Address: If you enabled DMZ, enter the IP address of the client you wish to 
expose, or use the drop-down menu to quickly select it.
Enable SPI IPv4: Enabling Stateful Packet Inspection (SPI) helps to prevent cyber 
attacks by validating that the trac passing through the session 
conforms to the protocol.
Enable Anti-Spoof 
Checking:
Enable this feature to protect your network from certain kinds of 
“spoong” attacks.
IPv6 Simple 
Security:
Enable or disable IPv6 simple security.
IPv6 Ingress 
Filtering:
Enable or disable IPv6 ingress ltering.