gistfile1.txt

# Map URLs to Internet Explorer Security Zones via PowerShell

$csSource = @'
using System;
using System.Runtime.InteropServices;
using System.Runtime.InteropServices.ComTypes;

                
public class IEZones
{
    private const string CLSID_InternetSecurityManager = "7b8a2d94-0ac9-11d1-896c-00c04fb6bfc4";
    private const int E_FAIL = unchecked((int)0x80004005);
    private const int ERROR_FILE_EXISTS = unchecked((int)0x80070050);
    private const uint SZM_CREATE = 0;
    private const uint SZM_DELETE = 1;

    public const uint ZoneLocalMachine = 0;
    public const uint ZoneIntranet = 1;
    public const uint ZoneTrusted = 2;
    public const uint ZoneInternet = 3;
    public const uint ZoneUntrusted = 4;

    public static uint MapUrlToZone(string url)
    {
        IInternetSecurityManager manager = CreateInternetSecurityManager();
        uint Zone;
        manager.MapUrlToZone(url, out Zone, 0);
        return Zone;
    }

    public static IInternetSecurityManager CreateInternetSecurityManager()
    {
        Type iismType = Type.GetTypeFromCLSID(new Guid(CLSID_InternetSecurityManager));
        return (IInternetSecurityManager)Activator.CreateInstance(iismType);
    }
}

[ComImport, GuidAttribute("79EAC9EE-BAF9-11CE-8C82-00AA004BA90B")]
[InterfaceTypeAttribute(ComInterfaceType.InterfaceIsIUnknown)]
public interface IInternetSecurityManager
{
    [return: MarshalAs(UnmanagedType.I4)]
    [PreserveSig]
    int SetSecuritySite([In] IntPtr pSite);

    [return: MarshalAs(UnmanagedType.I4)]
    [PreserveSig]
    int GetSecuritySite([Out] IntPtr pSite);

    [return: MarshalAs(UnmanagedType.I4)]
    [PreserveSig]
    int MapUrlToZone([In, MarshalAs(UnmanagedType.LPWStr)] string pwszUrl,
                out UInt32 pdwZone, UInt32 dwFlags);

    [return: MarshalAs(UnmanagedType.I4)]
    [PreserveSig]
    int GetSecurityId([MarshalAs(UnmanagedType.LPWStr)] string pwszUrl,
                [MarshalAs(UnmanagedType.LPArray)] byte[] pbSecurityId,
                ref UInt32 pcbSecurityId, uint dwReserved);

    [return: MarshalAs(UnmanagedType.I4)]
    [PreserveSig]
    int ProcessUrlAction([In, MarshalAs(UnmanagedType.LPWStr)] string pwszUrl,
                UInt32 dwAction, out byte pPolicy, UInt32 cbPolicy,
                byte pContext, UInt32 cbContext, UInt32 dwFlags,
                UInt32 dwReserved);

    [return: MarshalAs(UnmanagedType.I4)]
    [PreserveSig]
    int QueryCustomPolicy([In, MarshalAs(UnmanagedType.LPWStr)] string pwszUrl,
                ref Guid guidKey, ref byte ppPolicy, ref UInt32 pcbPolicy,
                ref byte pContext, UInt32 cbContext, UInt32 dwReserved);

    [return: MarshalAs(UnmanagedType.I4)]
    [PreserveSig]
    int SetZoneMapping(UInt32 dwZone,
                [In, MarshalAs(UnmanagedType.LPWStr)] string lpszPattern,
                UInt32 dwFlags);

    [return: MarshalAs(UnmanagedType.I4)]
    [PreserveSig]
    int GetZoneMappings(UInt32 dwZone, out IEnumString ppenumString,
            UInt32 dwFlags);
}

[ComImport, GuidAttribute("6D5140C1-7436-11CE-8034-00AA006009FA")]
[InterfaceTypeAttribute(ComInterfaceType.InterfaceIsIUnknown)]
public interface IServiceProvider
{
    void QueryService(ref Guid guidService, ref Guid riid,
                [MarshalAs(UnmanagedType.Interface)] out object ppvObject);
}
'@


Add-Type -TypeDefinition $csSource -Language CSharp

[IEZones]::MapUrlToZone('http://www.microsoft.com')
[IEZones]::MapUrlToZone('http://intranet') -eq [IEZones]::ZoneIntranet