Hardened SSH and fail2ban on Ubuntu

45 min Ubuntu 24.04 Versions 20.04, 22.04, 24.04

Objective

Make the SSH access of an Ubuntu server exposed to the Internet robust: login by key only, root forbidden, a list of allowed accounts, and automatic banning of the bots that try passwords.

This lesson is part of the full course

Unlock Ubuntu Server Administration (20.04 to 24.04 LTS) to read every lesson, do the exercises, access the simulations and earn your certificate.

Buy — 290 MAD All-access pass — 1,490 MAD

Already enrolled? Log in.