Run ss -tulpn.
ss -tulpn
Mission 253
Service exposure note
Write a short exposure review from listener evidence.
Security administrationssufwtee
Lesson 253 of 360
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Security administration · 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 ufw status.
ufw status
Run printf exposure-reviewed | tee lab/exposure.txt.
printf exposure-reviewed | tee lab/exposure.txt
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Lesson support
What to notice while you play.
Write a short exposure review from listener evidence.
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.
tee <file>
Write piped text to a lab file and keep it on screen.
ss|ip
Inspect simulated sockets and addresses.
ssh|scp|ssh-keygen
Practice SSH inspection and dry-run transfer shapes without network access.
ufw status
Inspect simulated firewall rules.