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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89 guides for “security” · Clear searchHow to harden a Linux server: a practical checklist
A public server is probed within minutes of going online. This hardening checklist covers users, SSH, firewalls, updates, fail2ban and monitoring — step by step.
VPS vs Dedicated Game Server Hosting: Which Should You Pick?
One-click game panels are easy but limited; a VPS gives you root and flexibility. Here's how to choose between a dedicated game host and a VPS.
Reading HTTP response headers: a practical guide
Response headers reveal how a site is served, cached and secured. Here's a practical tour of the headers that matter — and what to check when something's off.
How to check an SSL certificate's expiry and validity
An expired certificate breaks your site instantly. Learn how to check a certificate's expiry, chain and validity from the browser, the command line, and online.
DNS records explained: A, AAAA, MX, TXT, CNAME, NS
DNS is the internet's address book. Here's a plain-English guide to the record types you'll actually use — A, AAAA, CNAME, MX, TXT and NS — and when to reach for each.
How to check if a port is open (and what to do if it's not)
A service only works if its port is reachable. Learn how to test whether a port is open from your machine and from the internet, and how to fix a closed one.
DDoS Protection for Game Servers: What You Need to Know
Game servers are prime DDoS targets. Learn how attacks work, what network-level filtering does, and practical steps to keep your server online.
What is WHOIS privacy, and do you need it?
Registering a domain publishes your name, email and phone by default. WHOIS privacy hides them. Here's how it works and when to use it.
Set up Nginx with free SSL using Let's Encrypt
HTTPS is non-negotiable. Learn to install Nginx, serve a site, and secure it with a free, auto-renewing Let's Encrypt certificate using Certbot — in minutes.
nftables firewall basics for Linux servers
nftables is the modern replacement for iptables. Learn its table/chain model and write a clean, readable firewall ruleset for a VPS from scratch.
UFW firewall basics: lock down your VPS
UFW makes Linux firewalling simple. Learn to allow SSH and web traffic, block everything else, and manage rules safely without locking yourself out.
DNS records explained: A, AAAA, CNAME, MX and TXT
Every domain runs on a handful of record types. Here's what each one does, with real examples, so you can read and edit DNS with confidence.
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