This page has the options for IPFire's logs.
These options change how logs are displayed in the web user interface.
These settings change which events appear in the primary system log.
The text field allows you to change which program entries (known as “facilities”) appear in the log. It also allows the severity for each program entry to be set individually, in case you wish to only see Error-level messages from one program, while you would like to see full Debug messages from another.