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Clearpass: EAP-TEAP + Intune & EntraID AuthZ

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  • 1.  Clearpass: EAP-TEAP + Intune & EntraID AuthZ

    Posted Apr 02, 2025 05:46 AM
    Edited by Jamie E Apr 03, 2025 05:52 AM

    Hi, I'm new to Clearpass and trying to setup EAP-TEAP for our Intune managed devices with Scepman Cloud PKI. All goes well except for some minor issues I can't clarify using the provided documentation. So what is working so far:

    • Intune provision machine and user certs with URI attributes: AA_Device_Id and DeviceId for machine & AA_Device_Id, DeviceId and UNP for user.
    • Intune extension v6 resolves these attributes and queries the Intune API endpoints.
    • Disabled 'authorization required' for the inner EAP TLS method.
    • On Boot Method 1 is present in access tracker, on user login method 1 and 2 are present and successful.
    • Through authorization live-query the device groups and user groups get resolved

    So for the questions:

    • What is the functional difference between the EntraID http lookup for user group membership and using the Intune extension endpoint realtimeUserGroup as I am currently doing?
    • If Windows boots to logon screen EAP-TEAP method 1 machine authentication is performed, but method 2 is empty. In this situation the machine certificate has no UNP (only DeviceId), but still the Intune user authorization 'realtimeUserGroup' is requested, with a time-out resulting in some errors:The Intune extension debug logs shows - as expected - only the DeviceId and AAD_Device_Id being parsed, UNP is <null>, so I would expect the internal logic to skip user related http requests: 
      "UserPrincipalName":null

    Additional configuration screenshots:

    Intune device source:

    Intune user source:

    Access tracker:

    Service: