Linux Fundamentals · lesson 9 of 15 · 15 min

Linux hardening basics

summary: Hardening reduces unnecessary risk by applying updates, reviewing accounts, limiting services, and protecting logs. Make one documented change at a time so the result can be verified.

question: Why make one hardening change at a time?

options:

• To verify results and recover if needed
• To avoid documentation
• To make systems slower
• To hide changes

correct: To verify results and recover if needed

explanation: Focused changes are easier to test, document, and reverse.

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