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Enterprise security using ClearPass Policy Management, ClearPass Security Exchange, IntroSpect, VIA, 360 Security Exchange, Extensions and Policy Enforcement Firewall (PEF).
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Alert : NO Logon Server

  • 1.  Alert : NO Logon Server

    Posted Mar 25, 2014 01:20 PM
      |   view attached

    HI Aruba,


    First time to see this error aleart. See attached alert error " NO LOGON SERVER". does this mean the AD server is not reachable?



  • 2.  RE: Alert : NO Logon Server

    Posted Mar 25, 2014 02:37 PM

    That means that ClearPass cannot talk to any AD servers in the domain....  

    How often does this happen?

    Did you change the DNS server of clearpass to a non-AD server, perhaps?

  • 3.  RE: Alert : NO Logon Server

    Posted Mar 26, 2014 12:14 AM

    Hi cJoseph,


    Thanks for your reply.


    We didn't change any settings in the clearpass and few domain user encounter this reject status.


    Our appliance is using ClearPass version: we see this few times when we checked that this user/machine  is being rejected . but after 3 to 5 min we notice that it will be accepted again.


    I can't find any services being restarted in the Event viewer similar with the  windbind error (Radius service service is restarted).