Log messages often contain clues that can aid you in determining the cause of a problem.
Depending on the type, log messages may appear in either the event, attack, or traffic logs. The FortiADC appliance must be enabled to record event, attack, and traffic log messages; otherwise, you cannot analyze the log messages for events of that type. To enable logging of different types of events, go to Log & Report > Log Settings.
During troubleshooting, you may find it useful to lower the logging severity threshold for more verbose logs, to include more information on less severe events. To configure the severity threshold, go to Log & Report > Log Settings.