D-Link DI-704P - Manual (Page 26)

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MAC Address Control
MAC Address Control allows you to assign different access rights for different
users and to assign a specific IP address to a certain MAC address.
MAC Addre ss Control Check Enable to enable the MAC Address
Control. All of the settings in this page will take
effect only when Enable is checked.
Connection control Check Connection control to control what wired
and wireless clients can connect to this device. If
a client is denied connection to this device, it
means the client can't access the Internet either.
Choose "allow" or "deny" to allow or deny the
clients, whose MAC addresses are not in the
"Control table" (please see below), to connect to
this device.