When viewing the daily summary report generated by FortiSASE.

If the daily summary report generated by FortiSASE contains very little data, one possible explanation is that the "Log allowed traffic" setting is configured to log only "Security Events" for all policies. This configuration limits the amount of data logged, as it only includes security events and excludes normal allowed traffic.

Log Allowed Traffic Setting:

The "Log allowed traffic" setting determines which types of traffic are logged.

When set to "Security Events," only traffic that triggers a security event (such as a threat detection or policy violation) is logged.

Impact on Report Data:

If the log setting excludes regular allowed traffic, the amount of data captured and reported is significantly reduced.

This results in reports with minimal data, as only security-related events are included.

References:

FortiOS 7.2 Administration Guide: Provides details on configuring logging settings for traffic policies.

FortiSASE 23.2 Documentation: Explains the impact of logging configurations on report generation and data visibility.