Edimax Technology AR-7211B V2 manual to the Current ACL Table, Field, Description

Field	Description
Direction Select	Select the router interface. You can select LAN or WAN.
	In this example, LAN is selected.
LAN ACL Switch	Choose to enable or disable ACL function.
	Enter the IP address of the specified interface. Only the IP
IP Address	address that is in the same network segment with the IP
	address of the specified interface can access the router.
	You can choose the following services from LAN: web,
Services Allowed	telnet, ssh, ftp, tftp, snmp or ping. You can also choose
	all of the services.
Add	After setting the parameters, click “Add” to add an entry
	to the Current ACL Table.
Reset	Click to refresh this page.

If you select WAN for Direction Select, then you will see the following page:

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