Web configurations often require different responses to HTTP requests that appear, on the surface, to be similar. When users request a Web site’s home page, you may want to provide a different home page depending on where each user is located, which browser the user is using, or which language(s) the browser accepts and the order of preference. You might want to break the connection immediately if the request is coming from an IP range that has been generating DDoS attacks or initiating hacking attempts.
With the Responder feature, responses can be based on who sends the request, where it is sent from, and other criteria with security and system management implications. The feature is simple and quick to use. By avoiding the invocation of more complex features, it reduces CPU cycles and time spent in handling requests that do not require complex processing.