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
Game servers · 4 min read ·

How Much RAM Does a Rust Server Need?

Rust is one of the most memory-hungry survival games. Here's how much RAM you actually need by map size and player count — and why CPU matters just as much.

Game servers · 4 min read ·

How to Set Up a Rust Dedicated Server on a VPS

Go from a fresh Ubuntu VPS to your own Rust dedicated server: SteamCMD install, the correct start flags, firewall ports, and a clean systemd service.

Email · 6 min read ·

How to Set Up DKIM on a Self-Hosted Mail Server

Generate a DKIM key, publish it in DNS and sign outgoing mail on your own Postfix server with OpenDKIM. The full command-by-command walkthrough.

Networking · 5 min read ·

How to Point a Subdomain to a Different App or Port

Run several apps on one VPS, each on its own subdomain — api.yourdomain.com, app.yourdomain.com — using a reverse proxy. DNS plus the Nginx and Caddy configs.

Domains · 5 min read ·

How to Move Your Domain's DNS to Cloudflare

Migrate your DNS to Cloudflare for faster changes, a free CDN and DDoS protection — without downtime. The exact order of steps so no record is dropped.

Domains · 5 min read ·

How to Set Up a Subdomain for a Game Server

Give players a memorable address like play.yourdomain.com instead of a raw IP and port — with the right DNS record, and an SRV record to hide the port entirely.

Domains · 5 min read ·

How to Create a Staging Subdomain for Your Site

Test changes safely on staging.yourdomain.com before they hit production. Here's the DNS, the web-server config, the SSL, and how to keep bots and Google out.

Email · 5 min read ·

How to Set Up MX Records for Google Workspace

The exact MX record to add so Google Workspace receives mail for your domain, plus the SPF and DKIM records that keep your sending out of spam.

Email · 6 min read ·

How to Set Up SPF, DKIM and DMARC Step by Step

The three DNS records that decide whether your email lands in the inbox or the spam folder. Here's exactly what to publish, in the right order, with real values.

Domains · 5 min read ·

How to Set Up a Wildcard Subdomain on a VPS

A wildcard subdomain catches every subdomain at once — ideal for multi-tenant apps and dynamic subdomains. Here's the DNS record, the wildcard SSL cert, and the Nginx config.

Domains · 6 min read ·

How to Point a Domain to a VPS with Cloudflare

A step-by-step guide to connecting any domain to your VPS using Cloudflare's free DNS, including the exact A records and the proxy setting most people get wrong.

Security · 5 min read ·

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.

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