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

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Configuring the Windows Server 2008 Firewall for Lync Server

If the Windows Firewall is enabled and started at the time of installation of Lync Server components, the necessary exceptions will be created automatically.

Caution

Although many administrators are tempted to disable the Windows Firewall, it is certainly worth leaving it in place with the necessary rules configured. If you are convinced you don’t want to use the Windows Firewall, and don’t plan to use a third-party operating system layer firewall, leave the Windows Firewall service running, but configure the rules to allow all traffic to pass unhindered. This prevents possible problems interacting with the Windows Filtering Platform.

For administrators who installed Lync Server ...

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