Dns

1. No open port: how my phone reaches Paperless

   Pulling an invoice out of my own archive from anywhere, with not a single port open on the router, and measuring whether everything really is encrypted.

2. Running NetBird yourself: the matchmaker that steps aside

   A small server at Hetzner introduces all my devices to each other and then stays out of the way: what runs on it, how I upgrade it without risk, and which traps cost me hours.

3. A green padlock for services nobody can see

   How every service in my homelab gets a real HTTPS certificate although none of them can be reached from the internet, and why one entry in the internet's phone book is all it takes.