Objective
Enable secure user authentication in EventLog Analyzer using an external RADIUS server.
Prerequisites
Have a configured and reachable RADIUS server.
Have a RADIUS shared secret key (used for verifying communication between EventLog Analyzer and the RADIUS server).
Have valid user credentials in the RADIUS directory.
EventLog Analyzer should be able to connect to the RADIUS server through the specified port.
Steps to follow
Step 1: Log in to EventLog Analyzer with an administrator account.
Step 2: Navigate to Settings > Admin Settings > Logon Settings.
Step 3: Click the External Authentication tab.
Step 4: Under the RADIUS Server section, check the box for Enable RADIUS Server Authentication.
Step 5: Enter the following details:
- RADIUS Server IP: Provide the IP address of your RADIUS server.
- Authentication Port: Enter the port used by your RADIUS server (the default is usually 1812).
- Protocol: Choose the desired protocol from the dropdown (e.g., MSCHAP2).
- Shared Secret Key: Enter the shared secret key used to authenticate communication with the RADIUS server.
- Automatic Retries: Select the number of retry attempts allowed in case the initial connection fails.
Step 6: Click Save to apply the settings.
Step 7: Try logging out and logging back in using a RADIUS user account to confirm the setup is working.

Tips
PAP: Very basic method. Sends passwords as plain text. Avoid unless absolutely required and protected by encryption.
CHAP: Adds more security by using a challenge-response process instead of sending the password directly.
MSCHAP: Microsoft's version of CHAP. Better than CHAP but has known weaknesses.
MSCHAP2: Latest version. Provides mutual authentication and is the most secure among these options. Recommended.
Ensure the firewall allows communication between EventLog Analyzer and the RADIUS server on the selected port.
Make sure the RADIUS server is running and the user credentials are active and valid.
Always keep a local admin account active to avoid being locked out if RADIUS fails.