72D-Link  G415 User Manual
Section 3 - Conguration
Firewall
Go to Features > Firewall to congure the router’s rewall settings. The rewall feature protects your network from 
malicious attacks over the Internet. 
To congure the IPv4 rewall rules, click the IPv4 Rules tab. Refer to Firewall Settings - IPv4/IPv6 Rules on page 74
To congure the IPv6 rewall rules, click the IPv6 Rules tab. Refer to Firewall Settings - IPv4/IPv6 Rules on page 74
Click Save at any time to save the changes you have made on this page.
Enable DMZ Enable or disable Demilitarized Zone (DMZ). Devices in this 
zone are completely exposed to threats over the Internet. 
This is not recommended unless they are servers that must 
be exposed to the WAN.
DMZ IP Address If you enable DMZ, enter the IP address of the client to be 
placed in this zone, or use the drop-down menu to quickly 
select one of the clients.
Enable SPI IPv4 Enabling Stateful Packet Inspection (SPI) or dynamic packet 
ltering helps prevent cyber attacks by tracking more states 
per session to validate that the trac passing through the 
session conforms to the protocol.
Enable Anti-spoof 
Checking
Enable this feature to help protect your network from certain 
kinds of “spoong” attacks.
IPv6 Simple Security Enable or disable IPv6 simple security. A simple firewall 
conguration that denies access directly to computers behind 
the router. 
IPv6 Ingress Filtering Enable or disable IPv6 ingress ltering for incoming packets 
to prevent suspicious senders.