How to Secure a Linux Server with UFW, SSH Keygen, fail2ban & Two Factor Authentication

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In-depth guide on how to secure a Linux home server running Ubuntu 20.04. This video explains how to change the default SSH port, how to configure an UFW firewall, how to use ssh key-based authentication, how to install and configure fail2ban, and finally how to setup two factor authentication (2FA).

Follow this tutorial on my blog:

This video is part of my ultimate home server tutorial video series!
Part 0: 10 GIGABIT Ryzen Home Server Build:
Part 1: How to Install Ubuntu Server 20.04 LTS from USB:
Part 2: How to format and partition hard drives:
Part 3: You are here 🙂
Part 4: How to set up ZFS RAID10 on Ubuntu 20.04:
Part 5: How to Install Nextcloud Hub 21 on Ubuntu 20.04:
Part 6: How to Install Bitwarden on Ubuntu 20.04:

Check out today’s video sponsor IPVanish:

Timeline:
00:00 – Intro
01:21 – Get a VPN for less than 50$ for a full year!
02:25 – How to change default SSH port
05:26 – How to set up UFW
09:02 – How to set up key-based authentication
12:11 – How to disable password based authentication
12:52 – How to set up fail2ban
16:03 – How to set up two factor authentication

Video Resources
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Man in the middle attack:
Privileged ports:

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