Titan

Titan, the application firewall from Flicks Software protects your IIS server against procedures executed by entire classes of hack attacks, rather than looking for individual characteristics of known worms and viruses. By protecting your IIS server procedurally, Titan is able to protect against both worms and viruses before they are discovered. Unlike other antivirus applications, such as intrusion detection systems and network firewalls, Titan is not limited to just previously analyzed viruses. Titan stops brute force attacks, too !