A:
If you enable the Windows Firewall on VMs inside your LAN, you'll need to ensure that the following ports and features are enabled to support Citrix
XenDesktop's services:
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For core functionality, enable ports for ICA, Workstation Agent, and CGP services: TCP ports 1494, 80, and 2598.
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For user-to-user desktop shadowing, enable ports for Remote Assistance: TCP port 3389.
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For real-time monitoring, enable the Remote Management feature.
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For HDX RealTime for Audio, open UDP ports 16500 through 16509.