deploy directaccess server frontending with Big IP GTM and LTM

guys, I need assistance in frontending microsoft direct access server pool using GTM/LTM. We have 2 direct access server which we want to loadbalance using LTM annd expose to the internet . I have setup the pool and vip in LTM,but I am unable to access the directaccess server default page using https://vip from the browser,But i can access it fine accessing direclty to server like: https://server1 I have got standard vip with client ssl and server ssl profile attached. Is there a iapp template which I can follow or any guide deploying. thanks Ram