0 Replies Latest reply on Nov 7, 2016 7:24 PM by aus_mick

    McAfee ePO sequence number tolerance

    aus_mick

      Fellow ePO community members,

       

      Has anybody found a useful explanation on how the ePO handles sequence numbers for managed endpoints in particular how tolerant it is to mismatches in the expected sequence number and at what point it will reject connections from managed endpoints where the sequence number reported by the endpoint is different than expected.

       

      I have been observing weird behaviour where connections are being rejected by the ePO, then you force a communication and it is successful. I have confirmed that the machine is one and the same and that there is no duplicate GUIDs present.

       

      First communication attempt (rejected due to sequence error):

       

      20161108121327    I    #04648    NAIMSERV    Wake up agent on DNS name MYHOSTPC.mydomain...

      20161108121330    E    #05696    NAIMSERV    servdal.cpp(1635): Agent MYHOSTPC with GUID {E266F386-C8FC-4977-9C0C-16EFC9D03574} and IP 10.1.1.75 and MAC 001d7d29863d has an invalid sequence number; expecting 16395 > 16396

      20161108121330    E    #05696    NAIMSERV    servdal.cpp(1724): Rejecting agent due to an invalid or duplicate sequence number

      20161108121330    E    #05696    NAIMSERV    AgentServerCommHandler.cpp(691): Failed to process agent request

       

      Second communication attempt (successful):

       

      20161108121418    I    #08116    NAIMSERV    Wake up agent on DNS name MYHOSTPC.mydomain...

      20161108121419    I    #05696    NAIMSERV    Received [PropsVersion] from MYHOSTPC:{E266F386-C8FC-4977-9C0C-16EFC9D03574}

      20161108121420    I    #05696    NAIMSERV    Received [FullProps] from MYHOSTPC:{E266F386-C8FC-4977-9C0C-16EFC9D03574}

      20161108121420    I    #05696    NAIMSERV    Processing agent props for MYHOSTPC(E266F386-C8FC-4977-9C0C-16EFC9D03574)

      20161108121421    I    #05696    NAIMSERV    Found 4 tasks assigned to node MYHOSTPC

      20161108121421    I    #05696    NAIMSERV    Sending props response for agent MYHOSTPC, policy files attached (Policy\Server.xml)

      20161108121421    I    #05696    NAIMSERV    Signing agent response package with key 4mEIMAhlFIPN99O1JP8cZOk0nAG5UNaEVtSyhV59H/Y=

      20161108121421    I    #05696    MOD_EPO     epo request processed, rc=0, session ID=505839, session time=687ms

      20161108121423    I    #05256    NAIMSERV    Received [Event] from MYHOSTPC:{E266F386-C8FC-4977-9C0C-16EFC9D03574}

       

      Thanks,

      Mick