Initial Server Setup with Ubuntu 20.04

**Initial Server Setup with Ubuntu 20.04**

Introduction When you first create a new Ubuntu server, you should immediately create a non-root user with sudo privileges, configure SSH key authentication, and enable a firewall. These three steps form the foundation of server security and prevent common attack vectors like brute-force password attempts and unauthorized access. Performing proper initial server setup is critical because a fresh Ubuntu installation defaults to root access, which poses significant security risks. Without hardening, your server becomes a target for automated attacks that scan for default configurations and weak passwords. This guide walks you through essential security steps that take approximately 10–15 minutes but dramatically reduce your attack surface...

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