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Microsoft® Lync® Server 2013 Unleashed Second Edition by Randy Wintle, Alex Lewis, David Ross, Tom Pacyk

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Why a Reverse Proxy Is Required

It is important to understand why a reverse proxy solution is required for Lync Server 2013. In Lync Server 2013, a reverse proxy is required to publish Lync Web Services to external users. These services are responsible for the following:

Simple URL Publishing—This is required for users to join a Lync Online Meeting.

Web Conferencing Content—Users will download PowerPoint, Whiteboard, and Poll data through the Lync Web Services when in a meeting.

Address Book and Distribution List (DL) Expansion—This is required for users to download the Lync Address Book and perform DL expansion.

User Certificates—Lync Server utilizes client certificate authentication for many purposes; external users must connect to ...

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