Practical technology help for homes and small businesses, from someone who knows how to make it work. Based in Martinez, serving Contra Costa County.
Practical IT guides, cheatsheets, and references from Jeremiah Ellington, drawn from more than 20 years of IT work in public sector and higher education.
Topic
Hosting, domains, DNS, TLS, and keeping a small-business site healthy.
Website Hosting & Development
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 a trusted root, validity, revocation, and where the certificate fits in the TLS handshake.
Website Hosting & Development · Start here
Domains, DNS, security certificates (TLS), and every kind of hosting explained in plain terms (shared, managed WordPress, VPS, managed cloud, static, and React/Next.js platforms), with a decision framework, honest cost and lock-in notes, and recommended setups for common small-business situations.