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

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Firewall Ports

Connectivity to an Edge Server or reverse proxy can be limited by firewalls and can be tricky to troubleshoot because the connections generally cross a few network boundaries. See Chapter 12, “Firewall and Security Requirements.” Check firewalls between remote clients, Edge Servers, and internal servers. Also, check whether the Windows Firewall is blocking connections.

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