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

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Reverse Proxy Certificate Requirements

When Mobility is being deployed as part of a new deployment or this functionality is being added to an existing environment, the key change to the reverse proxy solution is certificates. When the LyncDiscover service is being deployed through a reverse proxy, there are two possible solutions:

• Include LyncDiscover.<sipdomain> as a subject alternative name (SAN) entry on the web services public certificate. This can become costly when there are many SIP domains supported in the environment.

• Publish the LyncDiscover service over HTTP. When the service allows connections on port 80, the initial request will not be over TLS; clients are then redirected to the external web services FQDN for the Front End Server ...

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