Configuring SSH Certificates for Secure Login

Introduction

In this project, you will learn how to configure an SSH certificate for the labex user, so that the labex user does not need to enter a password when SSH logging into the local experimental environment.

👀 Preview

## No password required to log into localhost
$ ssh labex@localhost
labex:project/ $ ssh labex@localhost
Welcome to Ubuntu 22.04.3 LTS (GNU/Linux 5.4.0-162-generic x86_64)

 * Documentation:  https://help.ubuntu.com
 * Management:     https://landscape.canonical.com
 * Support:        https://ubuntu.com/advantage
Last login: Wed Jan 17 21:00:55 2024 from 47.251.57.20
## Log in directly to enter a new shell
labex:~/ $ ls
Code  Desktop  golang  project

🎯 Tasks

In this project, you will learn:

• How to create a .ssh directory in the labex user's home directory
• How to generate a new SSH key pair
• How to add the newly generated public key to the authorized_keys file
• How to restart the SSH service after configuring the SSH certificate
• How to test the SSH connection without a password

🏆 Achievements

After completing this project, you will be able to:

• Securely log in to the local experimental environment using SSH certificates
• Manage the SSH configuration for the labex user
• Understand the importance of using SSH certificates for secure access to servers