Rebuilding the whole machine, in the right order
What no backup contains, the order a machine goes back together in, and why reversing it costs you a second restore.
26 minutesTechnical content last reviewed on 11 Aug 2026
This lesson is for signed-in learners
Create an account to subscribe and record your learning progress.
End of the course
Firewall and hardening
Close what has no business being open, slow automated attacks down, and check regularly what the server exposes — without locking yourself out.
Continue to the next course