System logs displays entries for each system event on
the firewall. Each entry includes the date and time, event severity,
and event description. The following table summarizes the System
log severity levels. For a partial list of System log messages and
their corresponding severity levels, see Syslog Severity.
Hardware failures, including high availability
(HA) failover and link failures.
Serious issues, including dropped connections
with external devices, such as LDAP and RADIUS servers.
Mid-level notifications, such as antivirus
Minor severity notifications, such as user
Log in/log off, administrator name or password
change, any configuration change, and all other events not covered
by the other severity levels.