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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154 guides for “ports” · Clear search
Security · 6 min read ·

How to Set Up a Firewall for a Game Server

Game servers need specific ports open and everything else shut. Configure UFW to expose only your game's ports, protect RCON, and cut attack surface.

Tutorials · 6 min read ·

How to Create a Non-Root Sudo User on a VPS

Working as root all the time is dangerous. Create a dedicated sudo user, give it your SSH key, and adopt least-privilege as your default way of working.

Security · 5 min read ·

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.

Security · 5 min read ·

How to Secure Docker Containers

Containers aren't secure by default. Run as non-root, drop capabilities, limit resources, scan images and lock down the daemon on your VPS.

Tutorials · 5 min read ·

How to Read and Manage Linux Logs with journalctl

systemd's journal holds nearly every log on a modern Linux server. Learn to filter, follow, and prune it with journalctl so you can debug fast.

Tutorials · 5 min read ·

How to Monitor a Linux VPS (htop, netdata and more)

You can't fix what you can't see. Learn the essential Linux monitoring tools — from quick htop checks to a full netdata dashboard with alerts.

Security · 6 min read ·

DDoS Protection Basics for a VPS

What a DDoS attack actually is, what you can mitigate at the server level, and where you genuinely need upstream protection. A realistic primer.

Security · 5 min read ·

How to Add Two-Factor Authentication to SSH

Add a time-based one-time code on top of your SSH key for defence in depth. Set up Google Authenticator PAM without locking yourself out.

Security · 5 min read ·

How to Set Up a UFW Firewall on Ubuntu

UFW makes Linux firewalling approachable. Learn to allow only the ports you need, set default-deny, rate-limit SSH, and verify your rules.

Security · 5 min read ·

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.

Security · 5 min read ·

How to Set Up SSH Key Authentication and Disable Passwords

Stop relying on passwords. Generate an SSH key pair, install your public key on the VPS, and turn password logins off for good.

Game servers · 4 min read ·

How to Run Any SteamCMD Game Server on a Linux VPS

Learn the one workflow behind every Steam dedicated server: install SteamCMD, log in anonymously, install by App ID, open ports, and run it as a systemd service.

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