The Nxeon Blog
Guides for people who run their own servers.
Straight-talking tutorials and comparisons on VPS hosting, game servers, Linux and security. No fluff, just what actually works. 346 guides from the team that runs the servers.
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8 guides for “systemd” in Security · Clear search
How to Scan a Linux Server for Malware (rkhunter, ClamAV)
Even hardened servers get probed. Learn to scan for rootkits and malware with rkhunter and ClamAV, read the results, and respond to a real detection.
How to Manage Secrets and Environment Variables on a VPS
Hardcoded API keys and passwords in code are a breach waiting to happen. Learn to store secrets in env files, systemd, and vaults — the right way.
How to Protect a VPS from Brute-Force Attacks
Bots relentlessly guess logins against every public server. Here's a layered playbook — keys, firewall, rate limits and bans — to make brute-forcing pointless.
How to Disable Root Login on a VPS
The root account is every attacker's first guess. Learn to create a sudo user and disable direct root login over SSH — safely, without locking yourself out.
How to Install and Configure fail2ban
fail2ban watches your logs and automatically bans IPs that fail to log in too many times. Here's how to install it and write custom jails.
How to Self-Host Vaultwarden Behind an Nginx Reverse Proxy
Already run Nginx? Here's how to put Vaultwarden behind it properly — real config, Let's Encrypt TLS, WebSocket support and the security headers that matter.
How to Get a Free SSL Certificate with Certbot
Secure any site with a free, auto-renewing Let's Encrypt certificate using Certbot on Ubuntu 24.04 — for Nginx or Apache.
Free SSL certificates on your VPS with Let's Encrypt
HTTPS is free and automatic. Here's how to issue a Let's Encrypt certificate on your VPS, set up auto-renewal, and never see an expiry warning again.
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