Fail2ban: understand the signals before blocking access
Logs, filters and rules need to match the services you want to protect.
Revised 23 October 2026INSIGHTSEXPERIENCE / ENGINEERING / INNOVATION
Technical notes, with the context that matters.
Guides and reflections on security, Linux, development and systems. Historical articles retain their original publication dates alongside their revisions.
Database backups: the copy matters, recovery matters more
Credentials, consistency and verification: what a dump command leaves out.
Revised 23 October 2026Using tar for backups: archive, inspect, restore
An archive is useful when you know what it contains and how to recover it.
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Revisions retain their original publication dates. New content is published after editorial review. RSS ↗