private void ChangeWindowsFirewallExceptionStatus(NET_FW_PROFILE_TYPE2_ profileType, bool enable)
{
INetFwPolicy2 firewallPolicy = (INetFwPolicy2)Activator.CreateInstance(
Type.GetTypeFromProgID("HNetCfg.FwPolicy2"));
firewallPolicy.EnableRuleGroup((int)profileType, "Distributed Transaction Coordinator", enable);
}