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Open ports in the Windows firewall using GPO

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Open ports in the Windows firewall using GPO

Postby chicagotech » Thu Oct 20, 2011 2:16 pm

1.Go to Computer Configuration -> Administrative Templates -> Network -> Network Connection -> Windows Firewall -> Domain Profile
2.Double click on the entry ‘Windows Firewall: Define port exceptions’
3.Select Enabled.
4.Click on the Show… button to bring up the port exception list dialog
5.Select the Add… button
6.Specify the required port using the following syntax/convention:

For example - to allow connections on port 139 from the ip addresses in the local subnet, configure the rule as follows:
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