Lock Down Sudo with YubiKey on Linux | Step-by-Step Guide

Video Description

👀 Don’t stop here! Dive into the full Yubikeys playlist 👇 https://youtube.com/playlist?list=PLbLfGhJtu3KngxB5KIljBSJ8tIqR9POV8&si=h7wDhI60QVneH1-H 🔐 Want to take your Linux security to the next level? In this video, I’ll walk you step-by-step through setting up your system so that running sudo or sudo -i requires your YubiKey. You’ll learn: ✅ How to install the required packages on Linux ✅ How to configure your system to integrate with a YubiKey ✅ How to lock down sudo so elevated privileges can’t be used without your hardware key By the end, you’ll have a hardened Linux setup where your YubiKey acts as the gatekeeper for all administrative commands. Perfect for anyone who wants to improve their security against unauthorized access. 🌐 Github ▸ https://github.com/DouglasFreshHabian 📑 Commands sudo apt install libpam-u2f pamu2fcfg mkdir ~/.config/Yubico pamu2fcfg ➡️ ~/.config/Yubico/u2f_keys sudo nano /etc/pam.d/sudo auth required pam_u2f.so sudo mkdir /etc/Yubico sudo mv ~/.config/Yubico/u2f_keys /etc/Yubico/u2f_keys sudo nano /etc/pam.d/sudo auth required pam_u2f.so authfile=/etc/Yubico/u2f_keys 📜 Affiliate Links Some links are affiliate links, which means I may earn a small commission at no extra cost to you. Thank you for support! 🎶 Music Credits 🔹 Fresh Forensics 📢 Disclaimer This video is for educational purposes only. 🕘 Timestamps 00:00 Intro 00:35 What is Sudo? 03:34 Apt search pamu2f 05:00 Install libpam-u2f & pamu2fcfg 06:23 Create Yubico Directory 07:42 Configure YubiKey for Registration 08:50 Explanation of u2f_key mapping 10:09 Edit sudo File 11:09 Confirm Success with Echo Test 16:52 Moving u2f_keys Config File 21:12 Entro