Typical Web Firewalls use a mechanism to classify anomaly traffics. This tool submits an old-school malicious (not dangerous) request, and tells you the type of firewall a particular web site use (if any). Mainly useful for blackbox security assessment. Coded years ago. Ref: Web Hacking Exposed 2nd Edition, ISBN:9780072262995
[REQUEST] <----> | Web Firewall | <----> [WebServer]
Date: Nov 2008
No longer updated. We've contributed this wafd's signatures to w3af finger_WAF.py plugin.