Linux Labs· Networking and Secure AdministrationLab 27 of 37

SSH Keys and Access Hardening

A trainee logs into this server with a password. Move them to a key you can revoke, then switch passwords off for that account alone, without locking anybody else out.

  • Intermediate
  • 35 min
  • Not rated yet
  • Free
Start labPart of Linux System Administration

Free with a free account — it runs in your browser, nothing to install.

  • A real environment in your browser
  • You run the commands yourself
  • Your result is checked automatically

In this moduleNetworking and Secure Administration

  1. Inspect IPv4, IPv6, Routes, and Sockets30 min
  2. Persistent NetworkManager Configuration35 min
  3. DNS Client Resolution and Lookup Troubleshooting35 min
  4. firewalld Zones and Least-Privilege Access35 min
  5. Configure and Operate an SSH Server35 min
  6. SSH Keys and Access HardeningYou are here
  7. SFTP and Verified File Synchronization35 min
  8. Bastion Access and Restricted SSH Forwarding40 min