Websites & Domains
Published guides and cheatsheets.
Guides to the technical side of websites and domains: hosting, DNS and domain management, SSL/TLS certificates, email authentication records, and platforms such as WordPress and Shopify.
Website Hosting & Development
Small Business Hosting Guide
Domains, DNS, security certificates (TLS), and every kind of hosting explained in plain terms (shared, managed WordPress, VPS, managed cloud,…
Read the guideNetworking & Wi-Fi
Reliable Network Guide
How a dependable network fits together: routers vs. firewalls, switches, VLANs, Wi-Fi, PoE, guest networks, firewall rules, DNS, remote access, and…
Read the guideCloud & Microsoft 365
Microsoft 365 Small Office Guide
The settings that matter most when a small office runs on Microsoft 365: admin and emergency accounts, MFA, email authentication, shared mailboxes,…
Read the guideWebsite Hosting & Development
Certificates Explained
What a TLS certificate is and how a browser or server decides to trust one: key pairs, signing requests, the subject and SAN, key usage, chains to…
Read the guideCheatsheet
OpenSSL Certificate Inspection
OpenSSL commands for reading certificates, requests, CRLs and PFX files, checking a chain, matching a key to its certificate, and testing a live…
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