Run ufw status verbose.
ufw status verbose
Mission 268
Firewall port inventory
Compare firewall rules to a port inventory file.
Networkingufwcatsort
Lesson 268 of 360
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Networking · 8 minutes
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learner@clairos:/home/learner $
Unix ops lab: type a command, press Enter
Instructions
8 minutes
Click any instruction for the command details, the why, and the common mistake to avoid.
Run cat data/ports.txt | sort | uniq.
cat data/ports.txt | sort | uniq
Run grep 23 data/ports.txt.
grep 23 data/ports.txt
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Lesson support
What to notice while you play.
Compare firewall rules to a port inventory file.
Run the commands in order and compare the outputs.
Junior operators build confidence by gathering evidence before changing systems.
- Skipping the inspection step.
- Assuming one command tells the whole story.
Reference
Commands in this lesson.
cat <file>
Print text file contents.
sort|uniq
Practice simple text pipelines.
ufw status
Inspect simulated firewall rules.