GIGABYTE GN-BR404W - Manual (Page 66)

The 128 bits WEP encryption use 104 bits as a secret key, which can controlled by
user, and 24 bits as the initialize vector, which user can not control. These two
portions plus together is 128 bits encryption. Some other vendor’s product might
refer as 104 bits encryption. It is the same thing.
The 152 bits WEP encryption use 128 bits as a secret key, which can controlled by
user, and 24 bits as the initialize vector, which user can not control. The 152 bits
WEP encryption spawns a KEY ID containing 32 HEX digits.
MAC Access Control of the Wireless
The MAC Access Control allows the router to define up to 32 hosts which are allowed
to access to the WAN port. To disable the MAC Access Control function, keep the
default value, Disable. To set up a MAC setting, click Enable.
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