codn

In the previous post I reverse engineered the Speedport Plus 2 — an encrypted JSON-RPC API, SJCL AES-CCM, a five-step authentication flow.

I have two routers.

Most server hardening guides are checklists.

People are opening terminals again.

Over the last few weeks I started reading Claude Code skill repositories.

For the first time in software history, millions of people can build software without understanding how software works.

I wanted a whiteboard that felt closer to opening a blank page than launching a product.

Ubuntu’s default login banner wastes the first few seconds of every SSH session.

Today I set up a fully self-hosted mail server using Mailcow — and I did not do it alone.

This is the first post on codn.dev.