Second Anubis, just finished by setup yesterday i have it of a oracle cloud frre tier vps, which depending on the domain routes the traffic to services hosted on the vps itself or to my server ar home. Relatively easy to setup, blocks most requests with very few false positives (one of which for example it would aggressively challenge by thunderbird trying to reach my baikal instance). I set a bit more aggresive rules than default (i also block googlebot and bingbot, since i received a bit more requests than I'd like). In like 10 hours it straight up denied about 5000 requests from the ai-catchall ruleset (mostly amazonbot) and challenged about 10000, mostly from a block of IPs in singapore, some of the hosts having the user agent of a Macintosh with PowerPC. They all sure love to explore the public repos on my git server.

I'm in the process of changing servers for an upgrade, the old one still hosting more services while I setup the new one. The old one now does run audibly quiter. I don't even want to think how much electricity went wasted because of those bots