Security

last person joined: yesterday 

Forum to discuss Enterprise security using HPE Aruba Networking NAC solutions (ClearPass), Introspect, VIA, 360 Security Exchange, Extensions, and Policy Enforcement Firewall (PEF).
Back to discussions
Expand all | Collapse all

Clearpass Error 216 Authentication Failure

This thread has been viewed 12 times

  • 1.  Clearpass Error 216 Authentication Failure

    Posted Feb 09, 2017 10:05 AM

    We have an 802.1X wireless network that is currently using Device auth, this works perfectly happily for 95% of clients but we've started seeing clients in the last few weeks fail authentication with user not found and the device won't connect.

     

    These client are mostly new build Windows 7 laptops, they've been connected to the network with a wired connection which worked perfectly fine.

     

    Any help or guidance would be much appreciated.

     

    Thanks

     

    Jon

     

     



  • 2.  RE: Clearpass Error 216 Authentication Failure

    Posted Feb 09, 2017 10:21 AM
    In your AD authentication source there is a Base DN. Are the devices that are failing under that Base DN?


  • 3.  RE: Clearpass Error 216 Authentication Failure

    Posted Feb 09, 2017 10:24 AM

    I've checked two of the devices that are failing and both are in LDAP browser.

     

    Thanks

     

    Jon



  • 4.  RE: Clearpass Error 216 Authentication Failure

    Posted Feb 09, 2017 10:40 AM
    Are you seeing user or machine auth failures?

    Get Outlook for iOS


  • 5.  RE: Clearpass Error 216 Authentication Failure

    Posted Feb 09, 2017 10:58 AM

    jon, please share (or PM) an export of the failed access tracker event to help shed some light on the failure.



  • 6.  RE: Clearpass Error 216 Authentication Failure
    Best Answer

    Posted Feb 14, 2017 05:15 AM

    Thanks everyone, it turns out that its an issue with the computer account in AD. Our server team did some testing and found removing it from the domain and putting in a workgroup and then re-adding it to the domain fixed the issue.



  • 7.  RE: Clearpass Error 216 Authentication Failure

    Posted May 09, 2018 03:13 PM
      |   view attached

    Having a similar issue to Jon's, but issue arises after user(s) is migrated to a new domain. Attaching dashboard details.

    Attachment(s)

    zip
    DashboardDetails.zip   8 KB 1 version