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Day 9: Hardening the Fortress — Securing Your Linux VPS - Step By Step Guide
1. The First Rule: Kill the Root Login
2. Shifting the Goalposts: Changing the SSH Port
3. Building the Wall: UFW (Uncomplicated Firewall)
4. Banning the Persistent: Fail2Ban
5. Automated Hygiene: Updates & Unattended Upgrades
6. Fine-Grained SSH Control
Optional: Experimental Hardening
Summary Checklist
Create non root user to login and
Edit sudoers file?
disable root login
set good root password
add sudo
ssh key authentication
updates
Other stuff ;) SSH security later
Optional stuff you can experient
Full Stack Devops - Code - Infrastructure - Linux
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100 Days of DevOps
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