ModSecurity Module for NGINX (Beta) http://www.modsecurity.org/download/ https://github.com/SpiderLabs/ModSecurity/wiki/Reference-Manual#wiki-Installation_for_NGINX
Or naxsi (open source, high performance, low rules maintenance, Web Application Firewall module for Nginx). http://code.google.com/p/naxsi/ Cheers!
@pititis: any experience with naxsi? would you mind checking my thread please: http://www.howtoforge.com/forums/showthread.php?t=60341&highlight=naxsi These two are the only ones mentioning naxsi on this whole forum
