Sibuna

Sibuna is an open-source tool providing web application firewall capabilities including proof-of-work admission challenges to mitigate unwanted bot traffic. It works as a standalone executable or alongside proxies like Caddy, nginx, or Traefik, featuring browser-based puzzle challenges, customizable access policies, built-in SQL injection and XSS inspection, local rate limits, an optional OWASP Core Rule Set integration, and an optional web-based management console for traffic monitoring and policy management.