Home » Kerio User Forums » Kerio Control » Kerio firewall losing connecting to active directory

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To anyone who can assist,

we have a client who is using a Kerio Control box, every few days their box stops allowing users from authenticating via NTLM (domain credentials) and the only apparent fix is to reboot the Kerio firewall.

In the log it shows;

[04/Mar/2015 08:42:48] Authentication: WebInterface: Client: Invalid password for NT/Kerberos user john

however there are no errors in the DNS logs on either domain controller (both DNS servers)

Kerio Control is connected to the domain and the status under directory services is reporting that it's a member of the domain with the domain servers listed to connect to.
Jonas Rodrigues (Kerio)

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Within Kerio Control admin console go to logs -> Debug

Right click on the right window -> messages -> enable "User authentication -> ok

Watch debug log for clues.

All the best,


Kerio Technical Support
Log Support Incidents here: http://www.kerio.com/support
Also, please use our KB: http://kb.kerio.com
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