Reverse Proxy Requirements

Reverse proxies, such as ISA 2006 SP1 or Forefront Threat Management Gateway (TMG), are excellent ways to securely publish applications, such as Lync Server, to users on the Internet. By controlling specific ports to pass traffic and limiting destination URLs to only the desired paths, you can safely pass traffic from the Internet to Lync Server roles. The following sections discuss how to configure reverse proxies to work with Lync Server.