I need some help: I'm self-hosting the documentation to a scientific software package https://rebound.hanno-rein.de. This is for a small audience and it's a small, static website. Yet, crawlers have recently been hammering my server with stupid requests that make it very slow for normal users. The requests come from residential/VPN IP ranges and usually only include one request per IP. I want to block them, or slow them down. But I don't know how. 1/N