D-Link DIR-320 User Manual page 119

DIR-320 Wireless N150 Router with 3G/CDMA/LTE Support
and USB Port
User Manual
Parameter
Firewall
Ping
When all needed settings are configured, click the Apply button.
Select the checkbox to enable protection against ARP and DDoS
attacks.
Select the checkbox to allow the router to answer ping requests from
the external network through this connection. For security reasons,
it is recommended not to select this checkbox.
Page 119 of 220
Configuring via Web-based Interface
Description