参照：
Using IIS Application Request Routing (ARR) as a TMG Replacement
http://masteringlync.com/2013/02/12/using-iis-application-request-routing-arr-as-a-tmg-replacement/
OWAS Rule Setup
If you created your web server farm for OWAS you should have your default rules again. So if I look at that rule:
OWAS01.i-x-Cloud.com
{HTTP_HOST}
This rule again is pretty straight forward. We are matching anything intended to go to owas.domain.com. The big difference is under Action, our Server Farm is now OWAS and not Lync. You can do the same thing with Exchange or other services as well. Here is my completed configuration:
https://owas01.i-x-cloud.com/hosting/discovery
本文转自 CTO_LiuJinFeng 51CTO博客，原文链接：http://blog.51cto.com/dynamic/1675861，如需转载请自行联系原作者
