1.20. Troubleshooting# 1.20.1. LDAP/Active Directory Connection 1.20.2. Testing the Freeradius Server 1.20.3. RADIUS Authentication fails 1.20.4. RADIUS server log file 1.20.5. Access to Web API 1.20.6. OTP Authentication 1.20.7. LinOTP server log file Special logging configuration