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System events show “Contact by Unrecognized Client” and Event ID 771

    • Updated:
    • 11 Sep 2015
    • Product/Version:
    • Deep Security 8.0
    • Deep Security 9.0
    • Deep Security 9.5
    • Deep Security 9.6
    • Platform:
    • Virtual Appliance 5.1
Summary
When the ESXi host is not shut down properly, such as during a power failure, you see several instances of Event ID 771 and the following details in the system events of Deep Security:
Event: Contact by Unrecognized Client
Description: A connection to Deep Security Manager was initiated by a client not identifiable as a managed computer: x.x.x.x:49269.  Either the client is not a managed Deep Security component, or a secure communication channel could not be established.
Details
Public
Based on the logs, it appears that the information of the virtual machines (VMs) is not synchronized between the VMware vCenter and the Deep Security Manager (DSM) server.
To resolve the issue, get the latest VM information from the vCenter to the DSM:
  1. Remove the vCenter from the DSM console.
  2. Reset the Deep Security Virtual Appliance (DSVA) from the vSphere console. This will clear the information in /var/opt/ds_agent/guests.
  3. Add the vCenter into the DSM again.
  4. Activate all the VMs.
Premium
Internal
Rating:
Category:
Troubleshoot
Solution Id:
1099471
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