Run grep PasswordAuthentication /etc/ssh/sshd_config.
grep PasswordAuthentication /etc/ssh/sshd_config
Mission 24
SSH hardening
Read training SSH settings and confirm safer defaults without connecting anywhere.
Security administrationgrepcatjournalctl
Lesson 24 of 360
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Security administration · 9 minutes
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learner@clairos:/home/learner $
Unix ops lab: type a command, press Enter
Instructions
9 minutes
Click any instruction for the command details, the why, and the common mistake to avoid.
Run grep PermitRootLogin /etc/ssh/sshd_config.
grep PermitRootLogin /etc/ssh/sshd_config
Run journalctl -u ssh.
journalctl -u ssh
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Lesson support
What to notice while you play.
Inspect password login, root login, and SSH activity.
Use grep on /etc/ssh/sshd_config.
SSH is a common administrative entry point and deserves careful review.
- Testing with real connections from a training page.
- Only checking one setting.
Reference
Commands in this lesson.
cat <file>
Print text file contents.
grep [-i] <text> <file>
Find literal text inside a file.
journalctl -u <service>
Read simulated service journal entries.