The undo you schedule before you need it
Replace "keep a session open" with a scheduled rollback: systemd-run --on-active, proof from a brand-new connection, and cancelling the timer once the proof is in.
22 minutesTechnical content last reviewed on 17 Sept 2026
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What this lesson builds
- Knowing what the machine exposes, and closing the rest
- Running a service under systemd, from first start to automatic recovery