Mission 135

SSH dry run

Inspect SSH client configuration without connecting.

Security administration
8 minutes Admin Lesson 135 of 360
ssh
Lesson 135 of 360 0/360 lessons 0/17 missions 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.

Show SSH version

Run ssh -V.

ssh -V
Show resolved SSH config

Run ssh -G lab.

ssh -G lab
Review server password auth

Run grep PasswordAuthentication /etc/ssh/sshd_config.

grep PasswordAuthentication /etc/ssh/sshd_config
Lesson support

What to notice while you play.

Objective

Inspect SSH client configuration without connecting.

Hint

Run the commands in order and compare the outputs.

Why it matters

Junior operators build confidence by gathering evidence before changing systems.

Common mistakes
  • Skipping the inspection step.
  • Assuming one command tells the whole story.
Reference

Commands in this lesson.

ssh|scp|ssh-keygen

Practice SSH inspection and dry-run transfer shapes without network access.