The HTTP Request health probe performs a simple GET of a fully qualified URL. It accepts an optional User and Password pair, and evaluates the HTTP status code of the result.
The HTTP Request probe can be use partly to validate that a web application such as the MIM Portal is available and accessible, but it also serves to keep an application hot in IIS so that first time users of the day don't receive slow warmup performance.
Url – Fully qualified URL to request
User & Password – Optional user credentials
Fail Rule – Value is the numeric status code of the request. Default is to expect a result in the 200 or 300 range.
(Value >= 400) && (Value < 200)