Cisco CB21AG Installation And Configuration Manual page 146

Viewing the Current Status of Your Client Adapter
Table 7-4
Status
Authentication Type
Message Integrity Check
Cisco Aironet 802.11a/b/g Wireless LAN Client Adapters (CB21AG and PI21AG) Installation and Configuration Guide
7-8
Advanced Client Adapter Status (continued)
Description
Specifies whether the client adapter must share the same WEP keys as
the access point in order to authenticate or can authenticate to the
access point regardless of its WEP settings.
Value: Open or Shared
Note An incorrect WEP key setting prevents connectivity to the
network regardless of the 802.11 authentication type selected.
Refer to the
Note
page 5-6
mode.
Indicates whether your client adapter is using message integrity check
(MIC) to protect packets sent to and received from the access point.
MIC prevents bit-flip attacks on encrypted packets. During a bit-flip
attack, an intruder intercepts an encrypted message, alters it slightly,
and retransmits it, and the receiver accepts the retransmitted message
as legitimate.
Note MIC is supported automatically by the client adapter's driver,
but it must be enabled on the access point.
Value: None, MMH, or Michael
Message Integrity Check
None
MMH
Michael
Chapter 7
"Setting Advanced Parameters" section on
for information on setting the 802.11 authentication
Description
MIC is disabled.
MIC is enabled and is being used with
CKIP.
MIC is enabled and is being used with
WPA and TKIP.
Viewing Status and Statistics
OL-4211-03