fail2ban

VPS Server Initialization and Security Hardening – From Bare Metal to Production-Ready One-Click Script Practice

Based on a 233-line production-grade Shell script server-init.sh, this article details the 8-step initialization process for an Ubuntu 22.04 VPS: system update, Swap configuration, Docker installation, UFW firewall, Fail2Ban brute-force protection, Certbot certificate tool, coturn TURN server, and other core designs.