AZTCOFWCYBER SECURITY SOLUTIONS
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Knowledge base/Troubleshooting

AZTCOFW / TECHNICAL GUIDE

Troubleshooting

Authenticating OpenVPN Users with FreeRADIUSConfiguration Recipes

Sometimes things don’t work as expected. The following options can be helpful in troubleshooting FreeRADIUS and OpenVPN. Commands must be run at a shell prompt either via the console or via SSH unless otherwise specified.

  • Make OpenVPN more Verbose and force it to log to a non-standard location so it can be read it easier.
    • Navigate to VPN > OpenVPN and select the server
    • Change Verbosity level to 7

This will log everything from OpenVPN to the OpenVPN tab under Status > System Logs. It can be watched with the following command (while trying to connect/etc):

clog -f /var/log/openvpn.log
  • FreeRADIUS may also be watched for attempted connections/authorizations (Failed or successful):
clog -f /var/log/system.log

Imported from the AZTCOFW knowledge base on 2026-09-05. Historical guidance may refer to older software versions. Confirm applicability before changing a production system.

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