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PowerShell: Retrieve information about the AD Domain Name Servers

This PowerShell function retrieves information about the Active Directory Domain Name Servers.
I created it a while ago to do some basic reporting for Domains and Domain Name Servers.

function Get-enADDNSServerInformation
{
   <#
         .SYNOPSIS
         Retrieve information about the Active Directory Domain Name Servers

         .DESCRIPTION
         Retrieve information about the Active Directory Domain Name Servers

         .PARAMETER Domain
         A description of the Domain parameter.

         .EXAMPLE
         PS ~> Get-enADDNSServerInformation

         Retrieve information about the Active Directory Domain Name Servers, use the current domain

         .EXAMPLE
         PS ~> Get-enADDNSServerInformation | Export-CSV -Path C:\scripts\PowerShell\Reports\DNS_Zones.csv -NoTypeInformation -Force -Confirm:$false
         Retrieve information about the Active Directory Domain Name Servers, use the current domain and exports it to CSV

         .EXAMPLE
         PS ~> Get-enADDNSServerInformation | ConvertTo-Json -Depth 10 | Set-Content -Path C:\scripts\PowerShell\Reports\DNS_Zones.json -Force -Confirm:$false
         Retrieve information about the Active Directory Domain Name Servers, use the current domain and exports it to a JSON File

         .EXAMPLE
         PS ~> Get-enADDNSServerInformation -Domain 'contoso.com'

         Retrieve information about the Active Directory Domain Name Servers in the Domain contoso.com

         .EXAMPLE
         PS ~> Get-enADDNSServerInformation -Domain 'contoso.com', 'corp.contoso.net'

         Retrieve information about the Active Directory Domain Name Servers in the Domain contoso.com and corp.contoso.net

         .OUTPUTS
         psobject

         .INPUTS
         String

         .NOTES
         TODO: Need refactoring: Object handler sucks
         TODO: Find a non WMI based Solution for this

         Version: 1.0.1

         GUID: 4404141a-1731-4786-8bbf-ee6706765050

         Author: Joerg Hochwald

         Companyname: enabling Technology

         Copyright: Copyright (c) 2ß18-2019, enabling Technology - All rights reserved.

         License: https://opensource.org/licenses/BSD-3-Clause

         Releasenotes:
         1.0.1 2019-07-26 Refactored, License change to BSD 3-Clause
         1.0.0 2019-01-01 Initial Version

         THIS CODE IS MADE AVAILABLE AS IS, WITHOUT WARRANTY OF ANY KIND. THE ENTIRE RISK OF THE USE OR THE RESULTS FROM THE USE OF THIS CODE REMAINS WITH THE USER.

         .LINK
         https://www.enatec.io

         .LINK
         http://msdn.microsoft.com/en-us/library/windows/desktop/aa393295(v=vs.85).aspx

         .LINK
         Get-ADDomainController

         .LINK
         Get-WmiObject
   #>

   [CmdletBinding(ConfirmImpact = 'None')]
   [OutputType([psobject])]
   param
   (
      [Parameter(ValueFromPipeline,
      ValueFromPipelineByPropertyName)]
      [string[]]
      $Domain = ([DirectoryServices.ActiveDirectory.Domain]::GetCurrentDomain().Name.ToString())
   )

   begin
   {
      $DNSReport = @()
   }

   process
   {
      foreach ($DomainEach in $Domain)
      {
         $AllDomainControllers = (Get-ADDomainController -Filter {
               Site -like '*' -and Domain -eq $DomainEach
         } | Select-Object -ExpandProperty Name)

         foreach ($SingleDomainController in $AllDomainControllers)
         {
            # Prevent Null Pointer Exceptions
            if ($SingleDomainController)
            {
               # TODO: Find a non WMI based Solution for this
               $Forwarders = (Get-WmiObject -ComputerName $SingleDomainController -Namespace root\MicrosoftDNS -Class MicrosoftDNS_Server -ErrorAction SilentlyContinue)

               # TODO: Find a non WMI based Solution for this
               $NetworkInterface = (Get-WmiObject -ComputerName $SingleDomainController -Query 'Select * From Win32_NetworkAdapterConfiguration Where IPEnabled=TRUE' -ErrorAction SilentlyContinue)

               $DNSReport += 1 | Select-Object -Property @{
                  name       = 'DC'
                  expression = {
                     $SingleDomainController
                  }
               }, @{
                  name       = 'Domain'
                  expression = {
                     $DomainEach
                  }
               }, @{
                  name       = 'DNSHostName'
                  expression = {
                     $NetworkInterface.DNSHostName
                  }
               }, @{
                  name       = 'IPAddress'
                  expression = {
                     $NetworkInterface.IPAddress
                  }
               }, @{
                  name       = 'DNSServerAddresses'
                  expression = {
                     $Forwarders.ServerAddresses
                  }
               }, @{
                  name       = 'DNSServerSearchOrder'
                  expression = {
                     $NetworkInterface.DNSServerSearchOrder
                  }
               }, @{
                  name       = 'Forwarders'
                  expression = {
                     $Forwarders.Forwarders
                  }
               }, @{
                  name       = 'BootMethod'
                  expression = {
                     $Forwarders.BootMethod
                  }
               }, @{
                  name       = 'ScavengingInterval'
                  expression = {
                     $Forwarders.ScavengingInterval
                  }
               }
            }
         }
      }
   }

   end
   {
      $DNSReport
   }
}

Get-enADDNSServerInformation | Export-Csv -NoTypeInformation

This is also part of my open-source repository.

Published inPowerShell

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