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Wireless Networks Thread, Laptops failing to authenticate in Technical; Hi, Ever since our CISCO wireless kit was installed we seem to be having a problem with laptops failing to ...
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    Hedghog's Avatar
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    Laptops failing to authenticate

    Hi,

    Ever since our CISCO wireless kit was installed we seem to be having a problem with laptops failing to authenticate seemingly at random. I'll try to explain the setup: -
    CISCO APs (enterprise level Kit)
    CISCO controlers and Radius server remotely located in LEA on adifferent domain working across a trust to us for LDAP queries.
    Laptops configured to use PEAP authentication with computer information.
    Laptops using 11g only with win XP

    When I ask the network guys at county for the error messages it seems the LDAP query is timing out.

    This continues until I plug the laptop into a wired connection and log onto the domain then it seems to find the laptop and everything works for a while then the same happens again.
    I've just come back from some time away to find 8 of our science laptops in this state - just reconnecting them to the domain seems to remind the server that they are still around.

    Any suggestions

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    Hedghog's Avatar
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    update

    This is the error message from the radius server.
    Authentications
    Most Recent Authentication

    0 Authentications

    Sessions

    Active Sessions
    Time:
    May 28,2013 1:11:40.333 PM

    RADIUS Status:
    24485 Machine authentication against Active Directory has failed because of wrong password. : EAP session timed out

    NAS Failure

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    There's a bug in the XP that stops it from updating the machine password over wifi, it needs to be plugged into a wired connection. This was fixed in Win7.

    KB article below

    http://support.microsoft.com/kb/904943?wa=wsignin1.0
    Last edited by paulfinlay; 1st June 2013 at 11:09 AM.



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