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Lock the server down from scratch

Narrow the host with sudo, a firewall, AppArmor and auto-updates

중급 · Lessons 12 · Lab 4

Curriculum

sudo, the least-privilege dial

The door that blanket sudo left open reading
From blanket sudo to the commands you need lab
Quiz: least-privilege sudo quiz

Default-deny firewall

What default-deny flips reading
Default-deny firewall, admin path kept open lab
Quiz: nftables firewall quiz

AppArmor confines the process

Security updates, automatic but controlled