Firewall Literacy
Understand host firewalls — configure only machines you own.
1
Allow vs Deny Thinking
ReadingDefault deny and least exposure.
15 min
+23 XP
2
ufw / firewalld Overview
ReadingCommon Linux host firewalls.
15 min
+23 XP
3
Reading Firewall Status
ReadingObservation commands on YOUR host.
15 min
+23 XP
4
Lab: Document Your Rules
ReadingExport status notes — do not open the world.
25 min
+23 XP
5
Quiz — Firewalls
Practice QuizFirewall literacy check.
10 min
+23 XP