HTTP Monitor Question

That's a good point but most of our stuff is IIS based which will always throw a 401 response for the first request unless Anonymous authentication is used. Other option for the monitor to be more effective is to to have a custom monitor for every web app. If there is a way where we can specify multiple receive strings with an OR operator, that would be nice. Then we can give all response codes except 500 and LTM will mark the member down when its 500. Not sure if this is possible.