This whitepaper documents shortcomings in various popular web application firewalls (WAFS) and how to trigger cross site scripting attacks regardless of the protections in place. Covered are F5 Big IP, Imperva Incapsula, AQTRONIX WebKnight, PHP-IDS, Mod-Security, Sucuri, QuickDefense, and Barracuda WAF.
You can download it from the following link: https://packetstormsecurity.com/files/download/133513/evading-xss-filters.pdf
Source: https://packetstormsecurity.com/files/133513/Evading-All-Web-Application-Firewalls-XSS-Filters.html