Could not authenticate with any LDAP server

Overview: This article provides an overview of troubleshooting steps to resolve the "Could not authenticate with any LDAP server" error, including verifying server reachability, checking SSL/TLS configurations, reviewing application logs, validating bind credentials, and testing authentication settings.

How to fix Error: Could not authenticate with any LDAP server

To resolve the above error, consider the following steps:

Step 1. Verify whether the LDAP server is reachable from the gateway server. 

This can be verified by running the following command:

For Example:

Step 2. If LDAP is configured with SSL or TLS in the Ezeelogin GUI, test it without SSL or TLS.

Step 3. Check what is under the error log.

The log files are stored in the system_folder specified at the time of installation.
The path can be found by examining the system_folder in /usr/local/etc/ezlogin/ez.conf. The path will be /{system folder}/application/logs/.

For example:-

Step 4. Check whether the bind password and bind username is correct. If the bind password or username is wrong the application logs will show Severity: Warning --> ldap_bind(): Unable to bind to server: Invalid credentials

Step 5. Check if the problem affects all users or only a single one.

Step 6.  Are you still having problems after logging in as super admin?  

Step 7. Switch the LDAP authentication to Internal and try it out.

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