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Windows 7, 8.1

I get an exception when I try to disable Windows Firewall. I try to do it with admin rights. But I haven't the same problem for Windows Firewall enabling. 

Type NetFwMgrType = Type.GetTypeFromProgID("HNetCfg.FwMgr", false);
INetFwMgr mgr = (INetFwMgr)Activator.CreateInstance(NetFwMgrType);

// Get the Windows Firewall status
bool firewallEnabled = mgr.LocalPolicy.CurrentProfile.FirewallEnabled;

// it works fine...
String frw_status = "Windows Firewall is " + (firewallEnabled ?
    "enabled" : "disabled");

// Enable or disable firewall.

// I get the exception here when I try to disable Windows Firewall.
// I have not problem when I try to enable Windows Firewall (it works fine).
//
// Exception message:
//   An unhandled exception of type 'System.NotImplementedException' 
//   occurred in net_sandbox.exe
//   Additional information: Method or operation is not emplemented yet..
mgr.LocalPolicy.CurrentProfile.FirewallEnabled = false;

How can I disable Windows Firewall?

Andrey Bushman
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  • What is "HNetCfg.FwMg" – rory.ap Nov 13 '15 at 19:15
  • Just a guess, but when I see "net_sandbox.exe", I'm thinking that you can't do anything to reduce the security configuration. Increasing wouldn't have the same restriction. – John Prideaux Nov 13 '15 at 19:17
  • @roryap, https://msdn.microsoft.com/ru-ru/library/windows/desktop/aa365287%28v=vs.85%29.aspx – Andrey Bushman Nov 13 '15 at 19:20
  • @JohnPrideaux, I don't understand you. This is a simple console project for testing. – Andrey Bushman Nov 13 '15 at 19:23
  • If I recall correctly, .NET runs with a trust model. If you are not running with full trust, you will be in a "sandbox", and there will be limits as to what you can do with respect to security of the network and filesystem. – John Prideaux Nov 13 '15 at 19:28

2 Answers2

4

It seems you're using Windows XP SP2 COM API, which is known to have issues on Windows Vista/7 and newer versions.

It's recommended that you use the newer API:

(I have not tested this)

Type netFwPolicy2Type = Type.GetTypeFromProgID("HNetCfg.FwPolicy2");
INetFwPolicy2 mgr = (INetFwPolicy2)Activator.CreateInstance(netFwPolicy2Type);

// Gets the current firewall profile (domain, public, private, etc.)
NET_FW_PROFILE_TYPE2_ fwCurrentProfileTypes = (NET_FW_PROFILE_TYPE2_)mgr.CurrentProfileTypes;

// Get current status
bool firewallEnabled = mgr.get_FirewallEnabled(fwCurrentProfileTypes);
string frw_status = "Windows Firewall is " + (firewallEnabled ?
"enabled" : "disabled");

// Disables Firewall
mgr.set_FirewallEnabled(fwCurrentProfileTypes, false);
Matias Cicero
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0
private const string CLSID_FIREWALL_MANAGER =
  "{304CE942-6E39-40D8-943A-B913C40C9CD4}";

private static NetFwTypeLib.INetFwMgr GetFirewallManager()
{
    Type objectType = Type.GetTypeFromCLSID(
          new Guid(CLSID_FIREWALL_MANAGER));
    return Activator.CreateInstance(objectType)
          as NetFwTypeLib.INetFwMgr;
}

public static void Firewall()
{
    INetFwMgr manager = GetFirewallManager();
    bool isFirewallEnabled = manager.LocalPolicy.CurrentProfile.FirewallEnabled;
    manager.LocalPolicy.CurrentProfile.FirewallEnabled = false;
}

And in Main.cs

yourclass.Firewall();

TriX
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