SMC Networks Barricade SMCWBR14-G - Manual (Page 70)

Configuring the Wireless Barricade g Router
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To generate the keys automatically, select the Passphrase option
from the drop down menu. For 40/64-bit encryption, 4 keys will
be generated. For 128-bit encryption, 1 key is generated and
repeated for the 4 keys.
The Active Transmit Key determines which key is used to encrypt
the transmit data. SMC recommend that you change the Active
Transmit key at regular intervals to maintain the security of your
wireless network.
Note: Active ASCII Keys must be exactly 5 characters for 40/
64-bit WEP.
Active ASCII Keys must be exactly 13 characters for
128-bit WEP.
If you use encryption, configure the same keys used for the
Wireless Barricade on each of your wireless clients. Note that
Wired Equivalent Privacy (WEP) protects data transmitted
between wireless nodes, but does not protect any transmissions
over your wired network or over the Internet.