Linux Server – From Fresh VPS to Complete Fortress
DevOps · 2026-04-12 · 55 min · Barthez Kenwou
A fresh Ubuntu VPS exposed to the internet without serious hardening becomes a target within hours. Here's the complete, chronological, phase-by-phase verified runbook I run on every new server in 2026: SSH Ed25519 + custom port, UFW + iptables + CSF, Fail2Ban + CrowdSec, hardened Nginx + Naxsi WAF, Cloudflare + bouncers, security headers, monitoring and daily reports - with verification checkpoints after every phase, the 10 golden rules of maintenance, and an emergency command reference. Based on my real deployments on Ubuntu 22.04/24.04.
Tags : LinuxHardening, ServerSecurity, CrowdSec, Naxsi, CSF, Fail2Ban, Cloudflare, UFW, DevOps, Ubuntu
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