IIS绑定和Windows身份验证

Question

我有一个使用Windows身份验证的本地网站（http://localhost/testsite），它运行良好。

现在我将该网站的绑定更改为使用Windows身份验证的URL (http://testsite.blablabla.biz) ，但出现了 HTTP 401.1 - 未授权：您提供的凭据不足以查看此目录或页面 错误。

我做错了什么？我已经在谷歌上搜索过很多但都没有真正帮到我。我认为这与域名有关，但我不确定。

- Jordy

Answer 1

Windows有一个安全功能，用于进行回环检查，旨在帮助防止计算机上的反射攻击。

当您使用自定义主机头浏览在运行IIS的计算机上托管的本地网站时，如果该网站使用Windows身份验证并且具有映射到本地回环地址的名称，则会收到此错误消息。

解决此问题有两种方法：

1. 禁用回环检查（不推荐），或 2. 指定主机名：

使用regedit，转到HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa\MSV1_0，并创建键BackConnectionHostNames，类型为REG_MULTI_SZ。将需要在本地计算机上使用Windows身份验证的FQDN填充到该键中。无需重新启动计算机。 Microsoft KB文章ID：896861

- user731569

---

不错，谢谢。我开始有点沮丧了，哈哈。 - superlogical

前几天我因为这个问题浪费了大约4个小时，最后才找到解决方法。这个错误真是太奇怪了！ - Bruce Hubbard

这里我正在构建我的第723个Windows Auth站点，但我又忘记了该死的回环检查。为什么我不能投多次赞？ - Diana Ionita

链接已经失效。 - Sigurd Garshol

@SigurdGarshol 谢谢，我已经根据我所找到的内容进行了更新。 - mason

Answer 2

以下是我编写的PowerShell命令，用于管理回送检查设置。其中包括尝试获取所有使用Windows身份验证的IIS网站的主机名并设置回连接主机名的代码。

Import-Module WebAdministration

function Add-BackConnectionHostName
{
    <#
    .SYNOPSIS
    Adds the back connection hostnames that will bypass the server loopback check.
    .DESCRIPTION
    Adds the hostname to the list of back connection hostnames that will bypass the server loopback check. Back connection host names  
    can be used to address the problem with IIS sites using Windows Authentication that is described in Microsoft KB896861.
    .EXAMPLE
    Add-BackConnectionHostName mywebsite.mydomain.tld
    .EXAMPLE
    Add-BackConnectionHostName mywebsite1.mydomain.tld, mywebsite2.mydomain.tld
    .PARAMETER Hostname
    The Hostname to add to the back connection hostnames list.
    .LINK
    Remove-BackConnectionHostName
    Get-BackConnectionHostName
    Enable-ServerLoopbackCheck
    Disable-ServerLoopbackCheck
    Get-ServerLoopbackCheck
    "You receive error 401.1 when you browse a Web site that uses Integrated Authentication and is hosted on IIS 5.1 or a later version" (http://support.microsoft.com/en-us/kb/896861)
    #>
    [CmdletBinding(SupportsShouldProcess = $true)]
    param
    (
        [Parameter(ValueFromPipeline = $true, Mandatory = $true)]
        [string] $Hostname
    )

    begin
    {
        $keyPath = "HKLM:\SYSTEM\CurrentControlSet\Control\Lsa\MSV1_0"
        $propertyName = "BackConnectionHostNames"
        $key = Get-Item $keyPath
        $property = $null
        $propertyValues = $null

        if ($key -ne $null)
        {
            $property = Get-ItemProperty $keyPath -Name $propertyName -ErrorAction SilentlyContinue

            if ($property -eq $null)
            {
                $property = New-ItemProperty $keyPath -Name $propertyName -Value $null -PropertyType ([Microsoft.Win32.RegistryValueKind]::MultiString) -ErrorAction Stop

                Write-Verbose "Created the $($propertyName) property."
            }

            if ($property -ne $null)
            {
                $propertyValues = $property.$propertyName
            }
        }
    }

    process
    {
        if ($property -ne $null)
        {
            foreach ($hostNameValue in $Hostname)
            {
                if ([string]::IsNullOrWhiteSpace($hostName) -eq $false -and $propertyValues -notcontains $hostNameValue)
                {
                    $propertyValues += $hostNameValue

                    Write-Verbose "Added $($hostName) to the back connection hostnames."
                }
                else
                {
                    Write-Verbose "Back connection host names already has an entry for $($hostName)."
                }
            }
        }
    }

    end
    {
        if ($propertyValues -ne $null)
        {
            $propertyValues = $propertyValues | ?{ [string]::IsNullOrWhiteSpace($_) -eq $false } | Sort -Unique
            Set-ItemProperty $keyPath -Name $propertyName -Value $propertyValues
        }
    }
}

function Remove-BackConnectionHostName
{
    <#
    .SYNOPSIS
    Removes the hostname from the list of back connection hostnames that will bypass the server loopback check.
    .DESCRIPTION
    Removes the hostname from the list of back connection hostnames that will bypass the server loopback check.
    .EXAMPLE
    Remove-BackConnectionHostName mywebsite.mydomain.tld
    .EXAMPLE
    Remove-BackConnectionHostName mywebsite1.mydomain.tld, mywebsite2.mydomain.tld
    .PARAMETER Hostname
    The Hostname to remove from the back connection hostnames list.
    .LINK
    Add-BackConnectionHostName
    Get-BackConnectionHostName
    Enable-ServerLoopbackCheck
    Disable-ServerLoopbackCheck
    Get-ServerLoopbackCheck
    "You receive error 401.1 when you browse a Web site that uses Integrated Authentication and is hosted on IIS 5.1 or a later version" (http://support.microsoft.com/en-us/kb/896861)
    #>
    [CmdletBinding(SupportsShouldProcess = $true)]
    param
    (
        [Parameter(ValueFromPipeline = $true, Mandatory = $true)]
        [string] $Hostname
    )

    begin
    {
        $keyPath = "HKLM:\SYSTEM\CurrentControlSet\Control\Lsa\MSV1_0"
        $propertyName = "BackConnectionHostNames"
        $key = Get-Item $keyPath
        $property = $null
        $propertyValues = $null

        if ($key -ne $null)
        {
            $property = Get-ItemProperty $keyPath -Name $propertyName -ErrorAction SilentlyContinue

            if ($property -ne $null)
            {
                $propertyValues = $property.$propertyName
            }
            else
            {
                Write-Verbose "The $($propertyName) property was not found."
            }
        }
    }

    process
    {
        if ($property -ne $null)
        {
            foreach ($hostNameValue in $Hostname)
            {
                if ($propertyValues -contains $hostNameValue)
                {
                    $propertyValues = $propertyValues | ? { $_ -ne $hostName }

                    Write-Verbose "Removed $($hostName) from the $($propertyName) property."
                }
                else
                {
                    Write-Verbose "No entry for $($hostName) was found in the $($propertyName) property."
                }
            }
        }
    }

    end
    {
        if ($property -ne $null)
        {
            $propertyValues = $propertyValues | ?{ [string]::IsNullOrWhiteSpace($_) -eq $false } | Sort -Unique

            if ($propertyValues.Length -ne 0)
            {
                Set-ItemProperty $keyPath -Name $propertyName -Value $propertyValues
            }
            else
            {
                Remove-ItemProperty $keyPath -Name $propertyName

                Write-Verbose "No entries remain after removing $($hostName). The $($propertyName) property was removed."
            }
        }
    }
}

function Get-BackConnectionHostName
{
    <#
    .SYNOPSIS
    Gets the list of back connection hostnames that will bypass the server loopback check.
    .DESCRIPTION
    Gets the back connection hostnames that will bypass the server loopback check. Back connection host names can be used to address 
    the problem with IIS sites using Windows Authentication that is described in Microsoft KB896861.
    .EXAMPLE
    Get-BackConnectionHostName
    .LINK
    Add-BackConnectionHostName
    Remove-BackConnectionHostName
    Enable-ServerLoopbackCheck
    Disable-ServerLoopbackCheck
    Get-ServerLoopbackCheck
    "You receive error 401.1 when you browse a Web site that uses Integrated Authentication and is hosted on IIS 5.1 or a later version" (http://support.microsoft.com/en-us/kb/896861)
    #>
    [CmdletBinding(SupportsShouldProcess = $false)]
    param
    (
    )

    begin
    {
        $keyPath = "HKLM:\SYSTEM\CurrentControlSet\Control\Lsa\MSV1_0"
        $propertyName = "BackConnectionHostNames"
        $key = Get-Item $keyPath
        $property = $null

        if ($key -ne $null)
        {
            $property = Get-ItemProperty $keyPath -Name $propertyName -ErrorAction SilentlyContinue

            if ($property -eq $null)
            {
                Write-Verbose "The $($propertyName) property was not found."
            }
        }
    }

    process
    {
        $propertyValues = $null

        if ($property -ne $null)
        {
            $propertyValues = $property.$propertyName
        }

        return $propertyValues
    }

    end
    {
    }
}

function Enable-ServerLoopbackCheck
{
    <#
    .SYNOPSIS
    Enables the server loopback check. Enabled is the normal state for a Windows Server.
    .DESCRIPTION
    Enables the server loopback check. Having the loopback check enabled is the normal state for a Windows Server. Disabling the loopback check can be used to address 
    the problem with IIS sites using Windows Authentication that is described in Microsoft KB896861. It is NOT the preferred method. See the KB article for more details.
    .EXAMPLE
    Enable-ServerLoopbackCheck
    .LINK
    Add-BackConnectionHostName
    Remove-BackConnectionHostName
    Get-BackConnectionHostName
    Enable-ServerLoopbackCheck
    Get-ServerLoopbackCheck
    "You receive error 401.1 when you browse a Web site that uses Integrated Authentication and is hosted on IIS 5.1 or a later version" (http://support.microsoft.com/en-us/kb/896861)
    #>
    [CmdletBinding(SupportsShouldProcess = $true)]
    param
    (
    )

    begin
    {
        $keyPath = "HKLM:\SYSTEM\CurrentControlSet\Control\Lsa"
        $propertyName = "DisableLoopbackCheck"
        $key = Get-Item $keyPath
        $property = $null

        if ($key -ne $null)
        {
            $property = Get-ItemProperty $keyPath -Name $propertyName -ErrorAction SilentlyContinue

            if ($property -eq $null)
            {
                Write-Verbose "The $($propertyName) property was not found."
            }
        }
    }

    process
    {
        if ($property -ne $null)
        {
            Set-ItemProperty $keyPath -Name $propertyName -Value 0
        }
    }

    end
    {
    }
}

function Disable-ServerLoopbackCheck
{
    <#
    .SYNOPSIS
    Disables the server loopback check for all hostnames. Enabled is the normal state for a Windows Server.
    .DESCRIPTION
    Disables the server loopback check for all hostnames. Having the loopback check enabled is the normal state for a Windows Server. Disabling the loopback check can be used 
    to address the problem with IIS sites using Windows Authentication that is described in Microsoft KB896861. It is NOT the preferred method. See the KB article for more details.
    .EXAMPLE
    Disable-ServerLoopbackCheck
    .LINK
    Add-BackConnectionHostName
    Remove-BackConnectionHostName
    Get-BackConnectionHostName
    Enable-ServerLoopbackCheck
    Get-ServerLoopbackCheck
    "You receive error 401.1 when you browse a Web site that uses Integrated Authentication and is hosted on IIS 5.1 or a later version" (http://support.microsoft.com/en-us/kb/896861)
    #>
    [CmdletBinding(SupportsShouldProcess = $true)]
    param
    (
    )

    begin
    {
        $keyPath = "HKLM:\SYSTEM\CurrentControlSet\Control\Lsa"
        $propertyName = "DisableLoopbackCheck"
        $key = Get-Item $keyPath
        $property = $null

        if ($key -ne $null)
        {
            $property = Get-ItemProperty $keyPath -Name $propertyName -ErrorAction SilentlyContinue

            if ($property -eq $null)
            {
                Write-Verbose "The $($propertyName) property was not found."
            }
        }
    }

    process
    {
        if ($property -ne $null)
        {
            Set-ItemProperty $keyPath -Name $propertyName -Value 1
        }
        else
        {
            $property = New-ItemProperty $keyPath -Name $propertyName -PropertyType ([Microsoft.Win32.RegistryValueKind]::DWord) -Value 1
        }
    }

    end
    {
    }
}

function Get-ServerLoopbackCheck
{
    <#
    .SYNOPSIS
    Gets the status of the server loopback check. Enabled is the normal state for a Windows Server.
    .DESCRIPTION
    Gets the status of the server loopback check. Having the loopback check enabled is the normal state for a Windows Server. Disabling the loopback check can be used 
    to address the problem with IIS sites using Windows Authentication that is described in Microsoft KB896861. It is NOT the preferred method. See the KB article for 
    more details.
    .EXAMPLE
    Get-ServerLoopbackCheck
    .LINK
    Add-BackConnectionHostName
    Remove-BackConnectionHostName
    Get-BackConnectionHostName
    Enable-ServerLoopbackCheck
    Disable-ServerLoopbackCheck
    "You receive error 401.1 when you browse a Web site that uses Integrated Authentication and is hosted on IIS 5.1 or a later version" (http://support.microsoft.com/en-us/kb/896861)
    #>
    [CmdletBinding(SupportsShouldProcess = $false)]
    param
    (
    )

    begin
    {
        $keyPath = "HKLM:\SYSTEM\CurrentControlSet\Control\Lsa"
        $propertyName = "DisableLoopbackCheck"
        $key = Get-Item $keyPath
        $property = $null

        if ($key -ne $null)
        {
            $property = Get-ItemProperty $keyPath -Name $propertyName -ErrorAction SilentlyContinue
        }
    }

    process
    {
        $loopbackCheckStatus = "Enabled"

        if ($property -ne $null)
        {
            switch ($property)
            {
                0 { $loopbackCheckStatus = "Enabled" }
                1 { $loopbackCheckStatus = "Disabled" }
                default { $loopbackCheckStatus = "Unknown" }
            }
        }

        return $loopbackCheckStatus
    }

    end
    {
    }
}

function Get-WebsiteHostname
{
    <#
    .SYNOPSIS
    Gets the hostnames for the IP addresses bound to a web site.
    .DESCRIPTION
    Gets the hostnames for the IP addresses bound to a web site. Where a host header exists, the host header is used; otherwise, the IP address is looked up
    in DNS to see if a PTR record exists.
    .EXAMPLE
    Get-WebSiteHostname $webSite
    .EXAMPLE
    Get-WebSiteHostname -Name 'Default Web Site'
    .EXAMPLE
    Get-Website | Get-WebSiteHostname
    .LINK
    Get-Website 
    #>
    [CmdletBinding(SupportsShouldProcess = $false)]
    param
    (
        [Parameter(ValueFromPipeline = $true, ValueFromPipelineByPropertyName = $true, Mandatory = $true)]
        [string] $Name
    )

    process
    {
        $siteHostnames = @()

        foreach ($webSiteName in $Name)
        {
            $bindings = Get-WebBinding -Name $Name

            foreach ($binding in $bindings)
            {
                $bindingInfo = $binding.bindingInformation.Split(':')
                $hostHeader = $bindingInfo[2]
                $bindingInfoAddress = $null
                $isValidIP = [System.Net.IPAddress]::TryParse($bindingInfo[0], [ref] $bindingInfoAddress)
                $siteHostname = $null

                if ($bindingInfo -eq '*')
                {
                    Write-Warning "The $($webSiteName) web site has a binding address set to All Unassigned."
                }
                elseif ([string]::IsNullOrWhiteSpace($hostHeader) -eq $false)
                {
                    $siteHostname = $hostHeader
                    Write-Verbose "The $($webSiteName) web site has a host header set to $($siteHostname)."
                }
                elseif ($isValidIP -eq $true)
                {
                    $siteHostname = (Resolve-DnsName $bindingInfoAddress -DnsOnly PTR -ErrorAction SilentlyContinue).NameHost

                    if ($siteHostname -ne $null)
                    {
                        Write-Verbose "The $($webSiteName) web site has an IP Address $($bindingInfoAddress) that resolves to $($siteHostname)."
                    }
                    else
                    {
                        Write-Warning "The $($webSiteName) web site has an IP Address $($bindingInfoAddress) with no PTR record."
                    }
                }
            }

            if ($siteHostname -ne $null)
            {
                $siteHostnames += $siteHostname
            }
        }

        return $siteHostnames | Sort -Unique
    }
}

# Use the IIS administration commandlets and the ones above to do the 
# following:
#   1. Get all the IIS web sites that use Windows authentication.
#   2. Get the hostnames from either the host header setting or the
#      DNS reverse lookup of the hostnames from the IP address.
#   3. Add the hostnames to the BackConnectionHostNames registry key.
#   4. Display the contents of the BackConnectionHostNames registry key.

$windowsAuthenticatedWebSites = Get-Website | ?{ (Get-WebConfiguration -Filter '/system.web/authentication' -PSPath $_.PSPath).mode -eq 'Windows' }
$webSiteHostnames = $windowsAuthenticatedWebSites | Get-WebsiteHostname
$webSiteHostNames | Add-BackConnectionHostName

Get-BackConnectionHostName

- JamieSee

Answer 3

请注意，通过更改绑定，此站点可能无法再次通过您以前在Web浏览器中使用的URL访问。了解什么是绑定，您应该找出是否做错了什么。

因此，给您提供401.1的站点可能完全是另一个站点。

- Lex Li