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Help

Having problems? Try the suggestions below.

  • Are you running the latest version of Security Onion?

  • Check the FAQ.

  • Search the Security Onion Mailing List.

  • Search the documentation and mailing lists of the tools contained within Security Onion: Tools

  • Run sostat for some diagnostics:

    sudo sostat | less

  • If any of the NSM processes show up as failed, try restarting them:

    sudo service nsm restart

  • Check log files in /var/log/nsm/ or other locations for any errors or possible clues:

    • Setup /var/log/nsm/sosetup.log
    • Daily Log / PCAPs /nsm/sensor_data/{ HOSTNAME-INTERFACE }/dailylogs
    • sguil /var/log/nsm/securityonion/sguild.log
    • Suricata /var/log/nsm/{ HOSTNAME-INTERFACE }/suricata.log
    • barnyard2 /var/log/nsm/ { HOSTNAME-INTERFACE }/barnyard2.log
    • netsniff-ng /var/log/nsm/{ HOSTNAME-INTERFACE }/netsniff-ng.log
    • Zeek /nsm/bro/logs/current
    • snort_agent /var/log/nsm/{ HOSTNAME-INTERFACE }/snort_agent.log
    • Elasticsearch /var/log/elasticsearch/<hostname>.log
    • Kibana /var/log/kibana/kibana.log
    • Logstash /var/log/logstash/logstash.log
    • Elastalert /var/log/elastalert/elastalert_stderr.log

  • If this is a sensor sending alerts to master server, is autossh running?

    sudo so-autossh-status

  • Having trouble with MySQL? Check all databases to see if any tables are are marked as crashed or corrupt.

    sudo mysqlcheck -A

  • Check specific MySQL databases by running something similar to the following:

    sudo mysqlcheck -c securityonion_db

  • Are you able to duplicate the problem on a fresh Security Onion installation?

  • Check the Known Issues to see if this is a known issue that we are working on.

  • If all else fails, please send an email to our security-onion mailing list.

  • Need training or commercial support? https://www.securityonionsolutions.com

.. toctree::
   :maxdepth: 2

   faq
   directory
   tools
   support
   mailing-lists
   help-wanted