The options of the Internet Firewall group are for configuring the filtering of WAN connection packets. The firewall is enabled on the Basic Config page. Also on this page you can permit/allow the access to the router’s settings from the outside, to ping the router from the external network, etc.
The WAN&LAN Filtering page is for specifying the parameters of packet filtering between the external and internal networks. You can not only set up filtering in both directions but also specify a schedule for it. The schedule is configured individually for each direction.
Packet filtering by resource name and MAC address is configured on the URL Filter and MAC Filter page, respectively.