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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11 guides for “tools” in Networking · Clear search
How to Diagnose DNS Problems with dig and nslookup
When a domain won't resolve, dig and nslookup tell you exactly why. A practical, example-driven guide to reading their output and finding the real problem.
How to Set Up a TeamSpeak 3 Server on a VPS
Install a TeamSpeak 3 server on a Linux VPS: download the server, create a user, grab the admin token and ServerQuery password, open the ports, and run it with systemd.
MX records and email deliverability: SPF, DKIM and DMARC
Getting email to the inbox is about DNS, not luck. Here's how MX records route your mail and how SPF, DKIM and DMARC keep it out of the spam folder.
Diagnosing 'connection refused' errors
'Connection refused' is one of the most misread errors in networking. Here's what it actually means, how it differs from a timeout, and a step-by-step fix.
How to point a domain at your VPS
Bought a domain and spun up a server? The last step is connecting them. Here's exactly how to point a domain at your VPS with A records — and verify it worked.
Common ports every developer should know (22, 80, 443, 3306…)
You don't need to memorise all 65,535 ports — just the ones that come up daily. Here's the working developer's reference to the ports you'll actually use.
Subnetting made simple: CIDR, netmasks, and host counts
CIDR and subnet masks stop being scary once you see the pattern. Here's a clear, math-light guide to /24s, netmasks, host counts and splitting a network.
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.
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.
What is a WHOIS lookup and how to read the results
WHOIS tells you who owns a domain, when it expires, and where it's registered. Here's what every field means and how to read a WHOIS record like a pro.
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