Decrypt error ?

Unanswered Question
Mar 17th, 2008

I occasionally although rare get this security message..

"Decrypt error accurred for client '00:19:d2:28:42:b5' using 'Wpa' key on '802.11b/g' interface of AP '00:19:07:94:d5:00'. "

(mac`s are examples)

I use WPA2 Enterprise with a radius server and CSSC client on laptops.

and EAP-PEAP-TKIP as encription

would this message be somebody trying to gain access falsely ?

any ideas, it doesnt happen often but would seem that someone is trying to use a not supported authentication type ?

cheers

Megz

I have this problem too.
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rob.huffman Mon, 03/17/2008 - 06:44

Hi Megz,

This is cosmetic :)

DECRYPT_ERROR_FOR_WRONG_WPA_WPA2

MIB Name

CISCO-LWAPP-DOT11-CLIENT-MIB. CiscoLwappDot11ClientKeyDecryptError.

WCS Message

Decrypt error occurred at AP with MAC "{0}" running TKIP with wrong WPA/WPA2 by client with MAC "{1}."

Symptoms

The controller detects that a user is trying to connect with an invalid security policy for WPA/WPA2 types.

WCS Severity

Minor.

Probable Causes

The user failed to authenticate and join the controller.

Recommended Actions

None.

http://www.cisco.com/en/US/docs/wireless/wcs/4.1/configuration/guide/wcsevent.html#wp1150053

http://forum.cisco.com/eforum/servlet/NetProf?page=netprof&forum=Wireless%20-%20Mobility&topic=General&CommCmd=MB%3Fcmd%3Dpass_through%26location%3Doutline%40%5E1%40%40.1ddf95ef/0#selected_message

http://forum.cisco.com/eforum/servlet/NetProf?page=netprof&forum=Wireless%20-%20Mobility&topic=General&CommCmd=MB%3Fcmd%3Dpass_through%26location%3Doutline%40%5E1%40%40.2cbf340f

Hope this helps!

Rob

meggerman Mon, 03/17/2008 - 07:12

Hi,

Thanks Rob ! thats a relife then. so im guessing they have a laptop and its set to the wrong security for whatever reason.

great help (as usual) !

Megz ;)

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