Run whoami.
whoami
Mission 254
Security evidence checkpoint
Tie identity, SSH, firewall, and logs into a review.
Security administrationwhoamigrepufwjournalctl
Lesson 254 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 grep PasswordAuthentication /etc/ssh/sshd_config.
grep PasswordAuthentication /etc/ssh/sshd_config
Run ufw status verbose.
ufw status verbose
Run journalctl -u ssh -n 2.
journalctl -u ssh -n 2
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Lesson support
What to notice while you play.
Tie identity, SSH, firewall, and logs into a review.
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.
grep [-i] <text> <file>
Find literal text inside a file.
whoami|id|groups
Inspect the learner account.
journalctl -u <service>
Read simulated service journal entries.
ufw status
Inspect simulated firewall rules.