In this post we will set up firewall rules using Group Policy Objects under Windows 2008 Server. When you install a windows role or feature the installer will configure firewall rules automatically upon installation. Some third party installers reconfigure the default Windows Firewall port settings and no further configuration is needed (e.g. Xenapp 5.0 for Windows 2008 to allow incoming connections, such as those from ICA traffic and the IMA service), some others don’t… For those applications we will configure the firewall rules and import those settings into an existing GPO with the netsh advfirewall command.
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