start up the Group Policy Management console (GPMC.MSC) and expand the Default Domain policy, right click and choose Edit.
when the Group Policy Management Editor appears, expand Computer Configuration/Policies/Administrative templates/Network/Network Connections/Windows Firewall/Domain Profile
in the Right pane, double click on the policy called Windows Firewall: Protect all network connections
set it to disabled
done !
you can now check your domain clients and verify that the policy has taken effect (if you want to speed up things open a cmd prompt on the client and issue gpupdate /force)
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