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Cisco Aironet 802.11a/b/g Wireless LAN Client Adapters (CB21AG and PI21AG) Installation and Configuration Guide
OL-4211-03
Chapter 7 Viewing Status and Statistics
Viewing the Current Status of Your Client Adapter
Authentication Type 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.
Note Refer to the “Setting Advanced Parameters” section on
page 5-6 for information on setting the 802.11 authentication
mode.
Message Integrity Check 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 Description
None MIC is disabled.
MMH MIC is enabled and is being used with
CKIP.
Michael MIC is enabled and is being used with
WPA and TKIP.
Table 7-4 Advanced Client Adapter Status (continued)
Status Description