Fortinet FortiWeb 400D - security appliance

Using an advanced multi-layered and correlated approach, FortiWeb provides complete security for your external and internal web-based applications. Using IP Reputation services, botnets and other malicious sources are automatically screened out before they can do any damage. Dos detection and prevention keeps your applications safe from being overloaded by Layer 7 Dos attacks. FortiWeb checks that the request hasn't been manipulated using HTTP RFC validation. Requests are checked against FortiWeb's signatures to compare them against known attack types to make sure they're clean.