fortianalyzer logs

Hello,

Does anyone know if more in-depth details can be known from analyzer logs. These are looking at some fortigates that support wireless & remote connections.

I am more interested in getting details of when & why a user disconnects from the service. More for troubleshooting.

Some of the logs appear to be simple...like user logon added & logout , but nothing much beyond it.

Please help, thank you in advance.