There are eight (8) log severity levels that indicate the importance of an event. Not including Debug, which is only needed to log diagnostic data, what are both the lowest AND highest severity…

While Notification is a low severity, 'Information' is typically considered a lower level for general events, and 'Emergency' is indeed the highest severity.

'Information' is the correct lowest level in this context, but 'Critical' is a high severity level, though not the absolute highest; 'Emergency' is higher.

'Error' indicates a problem but is neither the lowest nor the highest severity; 'Information' is lower, and 'Emergency' is higher.

FortiGate log severity levels follow the standard syslog hierarchy, where 'Information' represents routine, non-critical events (the lowest level excluding Debug), and 'Emergency' signifies a critical system-unusable condition, demanding immediate attention (the highest level).

'Information' is the correct lowest level, but 'Alert' is a high severity level that is still lower than 'Emergency'.