Hardening Your Deploynix Server: A Step-by-Step Security Audit

Every server connected to the internet is a target. Within minutes of provisioning, automated bots will begin probing your server for open ports, default credentials, and known vulnerabilities. While Deploynix applies a strong set of security defaults during provisioning, understanding what those defaults are and verifying them gives you confidence that your infrastructure is genuinely secure. This guide walks you through a comprehensive security audit of your Deploynix server. Whether you've just provisioned a fresh server or inherited one that's been running for months, these steps will help you verify your security posture and identify any gaps. Step 1: Verify Root Login Is Disabled Root is the most powerful account on any Linux system. If an attacker gains root access, they have unrestricted control over your server. Disabling direct root login forces attackers to compromise both a user account and the sudo password, adding a critical layer of defense. What Deploynix does by defaul