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Window firewall On and off functionality.

/ Published in: C#
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  1. 1)first add Refrence of the "hnetcfg.dll" avaialable in the 
  2. "C:\Windows\System32"
  3.  
  4. 2)Then add these references on the code behind
  5.  
  6. using NATUPNPLib;
  7. using NETCONLib;
  8. using NetFwTypeLib;
  9.  
  10. //////////////////////////////////////////////////////
  11.  
  12. 3)add these methoods
  13.  
  14.  private const string CLSID_FIREWALL_MANAGER = "{304CE942-6E39-40D8-943A-B913C40C9CD4}";
  15.  
  16.   private static NetFwTypeLib.INetFwMgr GetFirewallManager()
  17.         {
  18.             Type objectType = Type.GetTypeFromCLSID(new Guid(CLSID_FIREWALL_MANAGER));
  19.             return Activator.CreateInstance(objectType) as NetFwTypeLib.INetFwMgr;
  20.         }
  21.  
  22. //////////////////////////////////////////////////////
  23. 4)Calling above methood to invoke it on button click.
  24.  
  25. protected void btnDetectFirewal_Click(object sender, EventArgs e)
  26.         {
  27.             INetFwMgr manager = GetFirewallManager();
  28.             bool isFirewallEnabled = manager.LocalPolicy.CurrentProfile.FirewallEnabled;
  29.  
  30.             if (isFirewallEnabled == true)
  31.             {
  32.                 manager.LocalPolicy.CurrentProfile.FirewallEnabled = false;
  33.                 Label1.Text = "Firewall disabled successfully..!";
  34.             }
  35.             else
  36.             {
  37.                 manager.LocalPolicy.CurrentProfile.FirewallEnabled = true;
  38.                 Label1.Text = "Firewall enabled successfully..!";
  39.             }
  40.  
  41.  
  42.         }

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