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Problems with LDAPs sensors

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In order to monitor two domaincontrollers in a customers LAN, I added the LDAP(s) sensor for each server. Both sensors were configured exactly the same way. At the moment they are in an error state but the errormessages are different.

One says: "The server is not working"

The other one says: "Username or password incorrect"

Im using LDAP over SSL on default port 636. I also tested it with another user but that is not working either.

Thanks for help!

ldap ldaps prtg prtg-network-monitor

Created on Jun 2, 2020 12:15:19 PM by  JannikMitJ (0) 2



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Hi there,

Please make sure that a domain administrator is configured for the corresponding device in the settings. In addition, you can check if the SSL certificate is valid, by adding a SSL certificate sensor to the corresponding devices.


Kind regards,
Birk Guttmann, Tech Support Team

Created on Jun 3, 2020 8:42:48 AM by  Birk Guttmann [Paessler Support]



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Thanks for the answer, I'll try that. Yes, the domain administrator is configured in the device settings.

Is the spelling of the distinguished name correct? cn=prtg,ou=users,dc=mydomain,dc=local

Created on Jun 3, 2020 1:56:08 PM by  JannikMitJ (0) 2



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Hi Jannik,

Yes, the spelling of the distinguished name seems to be fine.


Kind regards,
Birk Guttmann, Tech Support Team

Created on Jun 4, 2020 1:00:28 PM by  Birk Guttmann [Paessler Support]



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Disclaimer: The information in the Paessler Knowledge Base comes without warranty of any kind. Use at your own risk. Before applying any instructions please exercise proper system administrator housekeeping. You must make sure that a proper backup of all your data is available.