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Command Line Interface
6-90
• TKIP defends against attacks on WEP in which the
unencrypted initialization vector in encrypted packets is
used to calculate the WEP key. TKIP changes the
encryption key on each packet, and rotates not just the
unicast keys, but the broadcast keys as well. TKIP is a
replacement for WEP that removes the predictability that
intruders relied on to determine the WEP key.
• AES has been designated by the National Institute of
Standards and Technology as the successor to the Data
Encryption Standard (DES) encryption algorithm, and will
be used by the U.S. government for encrypting all sensitive,
nonclassified information. Because of its strength, and
resistance to attack, AES is also being incorporated as part
of the 802.11 standard.
Example
wpa-clients
This command defines whether Wi-Fi Protected Access (WPA) is
required or optionally supported for client stations.
Syntax
wpa-clients <required | supported>
• required - Supports only clients using WPA.
• supported - Support clients with or without WPA.
Default Setting
Supported
Command Mode
Interface Configuration (Wireless)
SMC-AP(if-wireless g)#multicast-cipher TKIP
SMC-AP(if-wireless g)#