Firewall rules beyond "deny incoming, enable only the ports that you need"

This page summarizes the projects mentioned and recommended in the original post on /r/linuxadmin
Security Monitoring intrusion-detection Linux MacOS

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  • OSQuery

    SQL powered operating system instrumentation, monitoring, and analytics.

    • Configure auditd to monitor host activity: https://izyknows.medium.com/linux-auditd-for-threat-detection-d06c8b941505 or osquery: https://osquery.io/ (or similar software: filebeat for example).

  • Fail2Ban

    Daemon to ban hosts that cause multiple authentication errors

    • https://github.com/fail2ban/fail2ban is a mature, easy to set up way to have some dynamic firewall rules that respond to attacks. There are more sophisticated options, but they are probably not worth the return on time investment for you.

  • InfluxDB

    Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.

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NOTE: The number of mentions on this list indicates mentions on common posts plus user suggested alternatives. Hence, a higher number means a more popular project.

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