explain

One idea per page, in plain words: what it is and why it works that way.

1. DNS over TLS and why I run my own resolverWhat plain DNS leaks, how DoT and DoH fix it, and why a public port 53 is a bad idea.
2. How a password manager syncs to a phoneWhy the server never sees your passwords, and what that means for backups and login pages.
3. Single sign-on in plain wordsHow one login page protects many apps, with Authelia and Caddy forward_auth.
4. What a reverse proxy doesOne front door for many apps. Why Caddy sits in front of every service on my VPS.