Shadow Daemon is a collection of tools to detect, protocol and prevent attacks on web applications. Technically speaking, Shadow Daemon is a web application firewall that intercepts requests and filters out malicious parameters. It is a modular system that separates web application, analysis and interface to increase security, flexibility and expandability.
more here........https://shadowd.zecure.org/overview/introduction/
more here........https://shadowd.zecure.org/overview/introduction/