From Port80 Software:
With ServerDefender VP (64-bit) secure your web server against SQL injection, cross-site scripting, and other malicious attacks. ServerDefender VP guarantees the security of your web applications and secures your sensitive database content by blocking threats such as cross-site scripting, SQL injection, buffer overflows, file inclusion, denial of service, cookie poisoning, schema poisoning, and countless other attacks. It allows you the flexibility of running your site in Log mode only, enabling you to fine tune your rules and settings for the most efficient and site user friendly settings without sacrificing security.
What's new in this version:
Version 2.2.1 fixes problem with log verbosity in buffer overflow cases.