Big thanks to Cisco for sponsoring this video and sponsoring my trip to Cisco Live Amsterdam 2026.
Are you running a new Ubuntu or Linux server? Out of the box, most distributions are built for convenience rather than security. In this video, David Bombal and Kyle dive into the reality of open source security, revealing why default configurations leave your server highly exposed to hackers and cloud breaches.
Learn step by step how to harden your Linux environment using industry standard CIS controls and CIS benchmarks. We walk through a live demonstration of installing and running the free Lynis auditing tool to find vulnerabilities in a base Ubuntu server. Then, you will see exactly how to fix these issues, including configuring the UFW firewall, setting up least privilege access, and hardening your SSH port to stop brute force attacks. Follow along to master cybersecurity readiness and protect your infrastructure.
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// MENU //
0:00 – Coming Up
0:37 – Introduction
01:58 – Overview of the Center for Internet Security
04:13 – Restricting Administrative Privileges
05:19 – What is Lynis
05:44 – Lynis Installation Demo
06:59 – Where Can You Run Lynis?
07:55 – Getting Started for New Linux Users
08:40 – Is This Software Free?
09:00 – Cisco U Tutorials for Beginners
09:42 – Introduction to Fail2Ban
12:19 – SSH Security Recommendations
13:08 – Enabling Firewall Protection
14:22 – Free Tutorials Available on Cisco U
15:03 – Learn More with Kyle
16:15 – Conclusion & Outro
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Disclaimer: This video is for educational purposes only.
#ubuntu #lynis #linuxhardening
