Chapter 13 Logging and Reporting : Troubleshooting and logging
  
Troubleshooting and logging
This section explains how to troubleshoot logging configuration issues, as well as connection issues, that you may have with your FortiGate unit and a log device. This section also contains information about how to use log messages when troubleshooting issues that are about other FortiGate features, such as VPN tunnel errors.
The following topics are included in this section:
Using log messages to help in troubleshooting issues
Connection issues between FortiGate unit and logging devices
Log database issues
Logging daemon (Miglogd)