Technical guides for Australian businesses

A lot of small businesses assume mandatory breach reporting is a big-company problem. It isn't always — who the NDB scheme actually applies to, the 30-day assessment clock, and what to do first without a security team.

One of the most common pieces of web infrastructure, and one of the most commonly confused with something else. What it actually does, and why it's not the same thing as a load balancer.

Between typing an address and seeing a page, your browser does a lookup, shakes hands twice, and has a conversation you never see. The full journey, step by step, in order.

Not a DIY VLAN howto — the business case. Why segmentation matters once you're past a handful of devices, what it protects, and when it's a weekend project vs a reason to call a consultant.

Why a business might run a local LLM instead of a cloud API — the real privacy and data-sovereignty tradeoffs, and realistic hardware expectations, without the hype in either direction.

Build a correctly formatted SPF record for Google Workspace, Microsoft 365, and common ESPs — with a live check against the 10 DNS lookup limit. Runs entirely in your browser.

Build a DMARC record the safe way — starting at p=none with reporting addresses, plus a guide to graduating to quarantine then reject. Runs entirely in your browser.

Check a domain's live SPF and DMARC records, and DKIM at a selector you supply. Flags common problems like multiple SPF records or a permissive DMARC policy. Runs entirely in your browser.

Renewal should be a non-event. The checklist that keeps it that way — who controls the registration, what to check before the window opens, and what actually happens if you miss it.

A tighter, mid-migration companion to our DNS records guide — what TTL actually controls, why "propagation" is the wrong mental model, and how to check what's live right now.

One level up from our cPanel vs VPS guide — the three hosting tiers explained, a straight decision table, and why the "serious-sounding" option usually isn't the one you need.

Real definitions with enough context to be useful — domain, DNS, hosting, SSL, and email-security terms explained in plain English, cross-linked to the deep-dive articles where one exists.

No malware, no hacking skill required — and it's one of the most costly threats facing small businesses today. How BEC actually plays out, and the process changes that stop it.

Self-hosted mail is trending again in self-hosting circles. An honest look at what running your own mail server actually involves, and why deliverability keeps getting harder.

A vendor-agnostic, technically deep guide to why a flat network is a liability, how 802.1Q tagging actually works, and a practical segmentation model you can adapt.

From 20 May 2026, auDA checks your ABN or ACN is active every renewal, not just occasionally. What the change means, what happens if the check fails, and how to get ahead of it.

A common misconception about .au eligibility: that a domain must match a registered business name. It doesn't. What the rules actually allow, and when registering a name separately is still worth it.

Certificate validity is dropping on a fixed schedule to 47 days by 2029. Why it's happening, what breaks if you're not automated, and the checklist to get ahead of it.

What DNS records actually do — A, AAAA, CNAME, MX, TXT, NS and SOA — plus TTL, the truth about "propagation", and the mistakes that quietly break websites and email.

APIs power most of the internet — but what are they, exactly? What they are, how they work, and a real example using Zindle's HTML-to-PDF conversion API.

The step-by-step process for testing your site fully on the new server before DNS ever changes — so visitors never see a broken site during the move.

What each record does, how to set them up correctly, the right order to implement them, and how to test that everything is working — including common mistakes that break legitimate email.

The steps that matter after provisioning a new VPS — SSH hardening, UFW firewall, fail2ban, and unattended-upgrades. Written from real production practice, not a tutorial blog.

Where AI tools genuinely accelerate delivery, where they don't, and what to ask any developer who claims to use them — a straight assessment from someone who does.

Most businesses asking this question need cPanel hosting. This guide walks through the real differences, the management overhead nobody talks about, and a plain decision table.

A plain-English breakdown of auDA's eligibility rules for .com.au, .net.au, .org.au, and the direct .au — including common registration mistakes and what changed in 2022.