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![](https://lemmy.world/pictrs/image/8286e071-7449-4413-a084-1eb5242e2cf4.png)
I’m obviously a fan of LE but a simple self-hosted option with a custom CA would be great for local machines:
- I don’t want every Raspberry Pi/laptop/temp VM/whatever published into the cert transparency record
- Configuring the router to forward every local hostname to the machine’s .well-known would be awful (if my ISP even allowed port 80)
- Exposing local machines to the Internet is an unnecessary degradation of security
I like “heat pump”. It’s a very nice ELI5 name. It’s a pump for heat. A water pump takes water and forces it to where it wouldn’t go naturally. A heat pump does the same.