The firewall uses logging to send system messages to one or more logging destinations, where they can be collected, archived, and reviewed.
Messages are generated according to a severity level, specified by a number (0 through 7) or a keyword, as shown in Table 9-1.
|0: emergencies||The system is unusable|
|1: alerts||Immediate action is required|
|2: critical||A critical condition exists|
|3: errors||Error message|
|4: warnings||Warning message|
|5: notifications||A normal but significant condition|
|6: informational||Information message|
|7: debugging||Debug output and very detailed logs|
Logging messages can be sent to any of the following destinations:
The firewall console