Denial of Service

A denial of service attack is to deliberately cause an application to be less available than it should be. A typical example is to overload a Web application so that it cannot serve ordinary users. Alternatively, malicious users might try to simply crash your server.

IIS enables you to throttle applications, which means that it limits the number of requests it will serve. You might be able to deny access to users or IP addresses known to be malicious. Keeping your applications online is a matter of running robust code. You should test your application thoroughly and respond appropriately to error conditions wherever possible.