Chapter 13 Logging and Reporting : Logging and reporting overview
  
Logging and reporting overview
Logging and reporting in FortiOS can help you in determining what is happening on your network, as well as informing you of certain network activity, such as detection ofa virus or IPsec VPN tunnel errors. Logging and reporting go hand in hand, and can become a valuable tool for information as well as helping to show others the activity that is happening on the network.
This section explains logging and reporting features that are available in FortiOS, and how they can be used to help you manage or troubleshoot issues. This includes how the FortiGate unit records logs, what a log message is, and what the log database is.
The following topics are included in this section:
What is logging?
Log messages
Log files and types
Log database and datasets
Notifications about network activity
Log devices
Reports
Best Practices: Log management
 
In FortiOS 5.0, logs have changed and as a result, most log data is preserved and will be updated to the new log format when 5.0 is first installed. However, this log update may take a while, as this includes updating the report charts and datasets. A warning will appear to let you know that this process is still in progress even after the upgrade has finished.