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Microsoft® Lync Server 2010 Unleashed by Tom Pacyk, Andrew Abbate, Alex Lewis

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Ports to Open

The specific ports needed to open on a firewall vary somewhat depending on what services are placed into the DMZ and which services need to be accessible from the Internet. This section summarizes commonly deployed DMZ roles and the ports necessary to support them. The description calls out the port, traffic type, type of firewall it applies to (internal or external), and the purpose for the opening.

Audio/Video Edge Service Port Ranges

TCP 50,000 through 59,999—Incoming, these ports are needed for connections with Federated partners running Lync Server. Federated partners still running OCS 2007 also need UDP 50,000 through 59,999. This is to support RTP (Real-Time Transport Protocol). Federated A/V to a partner running an OCS 2007 ...

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