I have been testing Anubis to protect my services. It is a simple proof-of-work proxy. It doesn’t have a native Traefik middleware yet, but I got it working. Should be added to the docs soon-ish (I helped with an example).

Anubis weighs the soul of your connection using a sha256 proof-of-work challenge in order to protect upstream resources from scraper bots.

It works great, but I’m still on the fence about the mascot. I don’t really like the furry look, especially compared to the style of my website. I guess I’ll fork it, but the creator doesn’t like that. But it is MIT licensed, so they can’t do anything about it…