Secure your new Ubuntu server by creating a sudo user, configuring SSH access, and setting up a firewall. Essential security hardening and automation.

DigitalOcean Community's platform is a central hub for developers and sysadmins using DigitalOcean's cloud infrastructure, offering insights into cloud computing, DevOps practices, and open-source technologies. Through tutorials, Q&A, and community forums, DO_Community offers insights into deploying and managing applications on DigitalOcean's cloud platform. Developers can learn about Linux server administration, containerization, and automation tools to build and scale applications in the cloud.

DigitalOcean Community

A comprehensive guide to securing a fresh Ubuntu 20.04 server by creating a non-root sudo user, configuring SSH key authentication, and enabling UFW firewall. Covers essential security hardening steps including disabling root login, setting up automatic security updates, and configuring Fail2Ban. Includes troubleshooting tips, automation scripts, and best practices for production server deployment.

Initial Server Setup with Ubuntu 20.04

Step 3 — Granting Administrative Privileges

Step 5 — Enabling External Access for Your Regular User

Step 6 — (Optional) Hardening SSH Configuration

Step 7 — (Optional) Additional Security Hardening