CIDRAM/CIDRAM

Anti-DDoS-Lite (Anti-Crawler app) is a small PHP app to protect your site against DDoS attack.

Cloudflare WAF (Web Application Firewall) rules with a script for automatic updates. Block unwanted and malicious requests to improve the security of your origin server. The solution also supports integration with SniffCat and AbuseIPDB.

Apache Block Bad Bots, (Referer) Spam Referrer Blocker, Vulnerability Scanners, Malware, Adware, Ransomware, Malicious Sites, Wordpress Theme Detectors and Fail2Ban Jail for Repeat Offenders

Blacklists generator of subnets of Russian government agencies for blocking them on one's servers.

Caddy module to block or manipulate requests originating from AIs or cloud services trying to train on your websites

IPv4 Blacklist for Ipset or Squid-Cache

A Caddy module that blocks malicious traffic based on decisions made by CrowdSec.

Aggregation of lists of malicious IP addresses, to be blocked in the WAN > LAN direction, integrated into firewalls: FortiGate, Palo Alto, pfSense, IPtables ...

Data-Shield provides maintained IPv4 blocklists for inbound filtering on firewalls, gateways and web application firewalls.