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Cisco Aironet 340, 350, and CB20A Wireless LAN Client Adapters Installation and Configuration Guide for Windows
OL-1394-07
Chapter 7 Performing Diagnostics
Viewing the Current Status of Your Client Adapter
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.
Server Based Authentication
Indicates the configuration of the access point to which your client
adapter is associated.
Value:
None, WEP Key In Use, Cell Is Secure, or LEAP
Authenticated
Server Based Authentication
Description
None
The access point is configured for No
Encryption.
WEP Key In Use
The access point is configured for
Optional encryption.
Cell Is Secure
The access point is configured for Full
Encryption.
Note
If the client’s current profile does
not have Allow Association to
Mixed Cells enabled, the client
can associate only to access points
that use full encryption.
LEAP Authenticated
The client is using LEAP and is
authenticated to an access point that has
WEP and Network-EAP enabled.
Data Encryption Type
Indicates the type of encryption that is being used for unicast packets.
Value:
None, WEP, TKIP, or CKIP
Note
Refer to the
“Overview of Security Features” section on
page 5-22
for details on these encryption types.
Table 7-3
Client Adapter Status (continued)
Status
Description