Manage Logs

Tenable Nessus has the following default log files:

  • nessusd.dump — Nessus dump log file used for debugging output.

  • nessusd.messages — Nessus scanner log.

  • www_server.log — Nessus web server log.

  • backend.log — Nessus backend log.

  • nessuscli.log — Nessuscli log.

Default Log Locations

The following table describes the default log file locations for each operating system.

Operating System Log Location
Windows C:\ProgramData\Tenable\Nessus\nessus\logs\<filename>
macOS /Library/Nessus/run/var/nessus/logs/<filename>
Linux /opt/nessus/var/nessus/logs/<filename>