Wireless Settings - MAC Control Setup
After you enable the MAC access limit function, then you can determine the access mode.
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After you have entered the MAC address, click Apply to save your settings.
If you choose Disable MAC Address Limit, any user with the correct ESSID, correct WEP settings, and within range of your access point can access your Gateway. Enabling this mechanism provides protection to your Gateway and LAN.
Enable MAC Address Control: In this field, you can type the MAC address of the wireless clients whose access you want to control.