Gigabyte GN-B49G User Manual page 36

GN-B49G High-Speed Wireless Broadband Router
The MAC Access Control Tab
The MAC Access Control screen allows you to specify the Media
Access Controller (MAC) address of up to 32 devices on your network.
Only those devices listed in the table will have access to transmit data
through the GN-B49G. In this way, even if someone manages to obtain
all the information necessary to connect to your network, if their MAC
address is not permitted, they still cannot connect. Keep in mind,
however that MAC addresses can be spoofed, so it is not a panacea but
rather another component of your existing security process. Enable the
feature, then key in the MAC addresses to be allowed. Enter the MAC
in the form separated by colon. The default setting is Disable.
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