We would like to block the use of Flash on our internal network, but believe that several business-critical sites may still rely on that app. I'd love to be able to "watch" the traffic for several weeks to see which sites need Flash and then determine whether those sites are necessary in order for us to do business.
Do any of the security or web proxy vendors provide an ability to log those URLs that attempt to access or call Flash content? Or could the firewall provide this intel? Other ideas?