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: https://techguides.yt/secure-linux-server This video is part of my ultimate home server tutorial video series! Part 0: 10 GIGABIT Ryzen Home Server Build: https://www.youtube.com/watch?v=0zCflrtTPn8 Part 1: How to Install Ubuntu Server 20.04 LTS from USB: https://www.youtube.com/watch?v=9KFlxVTPicc Part 2: How to format and partition hard drives: https://www.youtube.com/watch?v=NQdTAfVQDB4 Part 3: You are here :) Part 4: How to set up ZFS RAID10 on Ubuntu 20.04: https://www.youtube.com/watch?v=FwL0yrGV2O0 Part 5: How to Install Nextcloud Hub 21 on Ubuntu 20.04: https://www.youtube.com/watch?v=ZM1fL6ze4X8 Part 6: How to Install Bitwarden on Ubuntu 20.04: https://www.youtube.com/watch?v=7bFuJCxWH6I Check out today's video sponsor IPVanish: https://techguides.yt/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 Thumbnail adapted from: https://www.freepik.com/free-vector/cyber-security-concept_8145780.htm Man in the middle attack: https://medium.com/@heller_9/mitm-man-in-the-middle-attack-eavesdropping-at-its-best-685eb47acd32 Privileged ports: https://www.w3.org/Daemon/User/Installation/PrivilegedPorts.html 💻 Gaming Setup: https://amzn.to/2E67AUG 📷 Production Gear: https://amzn.to/2VhbShO 🎵 Production Music courtesy of Epidemic Sound: http://www.epidemicsound.com/ 📝 Blog: https://techguides.yt/ 🐦 Twitter: https://twitter.com/techguidesyt 📺 Twitch: http://www.twitch.tv/speedbre4ker 🎧 Discord: https://discord.gg/tV4JVF2 #Secure #Server #TechGuides