Setting up health check for node when using host headers

the questions is not 100% clear to me, you are trying to setup a health check page on the F5 LTM. how do you setup a health page on the F5 LTM?

 

 

or do you want the the F5 to check the different virtual hosts on the IIS server? in that case you can use host headers in a health monitor by adding Host:www.dummy.com to the Send String. but im not quite sure that is what you are looking for here.