web application firewall

Are there any hosted WAF (Web Application Firewall) solutions available that work best with Drupal? The site we have in mind for use in this scenario is a simple content-driven site.

Several hosting companies and WAF (web applicaiton firewall)/IDS (Intrusion Detection System) vendors have asked the security team to provide more details around how to exploit the security vulnerabilities published as advisories. Some of these vendors have agreed to an NDA or other form of quiet period. Our response to the first of these requests is the basis for this post.

The Security Team's basic response is "probably not" but we are open to some variants on this idea. I'm posting this here to see what others think, so please post your perspective below on how to handle it.