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

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Verifying Access to the Lync Web Services

Before making Lync Server available externally, the administrator should verify that the environment is working correctly through the reverse proxy. Assuming that the firewall rules are in place and that the necessary DNS records are available externally, the following procedure helps administrators determine whether their environment is configured correctly:

1. From an externally connected computer, open a web browser and type https://externalwebfarmFQDN/abs/, where externalwebfarmFQDN is the external FQDN of the web farm that hosts the Address Book Service. If the URL returns an HTTP challenge, the site is configured correctly. You receive this challenge because the Address Book Server folder is configured ...

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