You can use crowdsec without a reverse proxy and just block offending IPs using a firewall. However, you can optionally configure a reverse proxy to enforce decisions made by crowdsec, e.g. by serving error pages or by serving captchas. See Remediation Components (formally “Bouncers”)
Why with a reverse proxy? I don’t see this mentioned as the default installation method. https://doc.crowdsec.net/u/user_guides/building/
You can use crowdsec without a reverse proxy and just block offending IPs using a firewall. However, you can optionally configure a reverse proxy to enforce decisions made by crowdsec, e.g. by serving error pages or by serving captchas. See Remediation Components (formally “Bouncers”)
Oh yeah I remember that! Never felt the need for it.