PowerShell WMI Gather DNS settings for all Servers

A question came up on TechNet:

“I am new to PowerShell and need a wmi script to query all the servers on my network for there dns settings and dump it out to a text file.  Would someone be able to help me get started?”

This was a fairly long script, so I decided to post it here.

*EDIT*

This script receives an inordinate amount of comments, mostly requesting that I send people a copy, so I have decided to place a copy on TechNet: http://gallery.technet.microsoft.com/Gather-DNS-settings-from-fec23eaa I am also pasting the new version below:

001 002 003 004 005 006 007 008 009 010 011 012 013 014 015 016 017 018 019 020 021 022 023 024 025 026 027 028 029 030 031 032 033 034 035 036 037 038 039 040 041 042 043 044 045 046 047 048 049 050 051 052 053 054 055 056 057 058 059 060 061 062 063 064 065 066 067 068 069 070 071 072 073 074 075 076 077 078 079 080 081 082 083 084 085 086 087 088 089 090 091 092 093 094 095 096 097 098 099 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136

<# .SYNOPSIS     Get-ServerDNS – Gathers DNS settings from computers. .DESCRIPTION     This script gathers DNS settings from the specified computer(s) .NOTES     File Name: Get-ServerDNS.ps1     Author: Karl Mitschke     Requires: Powershell V2     Created: 05/12/2010     Modified: 12/23/2011 .LINK     “https://unlockpowershell.wordpress.com/2010/05/12/powershell-wmi-gather-dns-settings-for-all-servers-2/&#8221;     “http://gallery.technet.microsoft.com/Gather-DNS-settings-from-fec23eaa&#8221; .EXAMPLE C:\PS>.\Get-ServerDNS.ps1 Description ———– Gathers DNS settings from the local computer. .EXAMPLE C:\PS>.\Get-ServerDNS.ps1 -Computer Exch2010 Description ———– Gathers DNS settings from the computer Exch2010. .EXAMPLE C:\PS> Get-ExchangeServer | Get-ServerDNS.ps1 Description ———– Gathers DNS settings on all Exchange servers. .EXAMPLE C:\PS> $cred = Get-Credential -Credential mitschke\karlm C:\PS>.\Get-ServerDNS.ps1 -ComputerName (Get-Content -Path ..\Servers.txt) -Credential $cred Description ———– Gathers DNS settings on all servers in the file Servers.txt. .PARAMETER ComputerName     The Computer(s) to Gather DNS settings from. If not specified, defaults to the local computer. .PARAMETER Credential     The Credential to use. If not specified, runs under the current security context. #> [CmdletBinding(SupportsShouldProcess=$false, ConfirmImpact=‘Medium’)] param ( [parameter( Mandatory=$false, ValueFromPipeline=$true) ] [String[]]$ComputerName=$Env:ComputerName, [Parameter( Position = 1, Mandatory = $false )] $Credential ) BEGIN{    #region PSBoundParameters modification     if ($Credential -ne $null -and $Credential.GetType().Name -eq “String”){         $PSBoundParameters.Remove(“Credential”) | Out-Null         $PSBoundParameters.Add(“Credential”, (Get-Credential -Credential $Credential))     }     #endregion     $AllServers = @()     $ServerObj  = @()     $Member = @{         MemberType = “NoteProperty”         Force = $true     } } PROCESS{     $PSBoundParameters.Remove(“ComputerName”) | Out-Null     foreach ($StrComputer in $ComputerName){         $NetItems = $null         Write-Progress -Status “Working on $StrComputer” -Activity “Gathering Data”         $ServerObj = New-Object psObject         $ServerObj | Add-Member @Member -Name “Hostname” -Value $StrComputer         $NetItems = @(Get-WmiObject -Class Win32_NetworkAdapterConfiguration -Filter “IPEnabled = ‘True'” -ComputerName $StrComputer @PSBoundParameters)         $intRowNet = 0         $ServerObj | Add-Member -MemberType NoteProperty -Name “NIC’s” -Value $NetItems.Length -Force         [STRING]$MACAddresses = @()         [STRING]$IpAddresses = @()         [STRING]$DNS = @()         [STRING]$DNSSuffix = @()         foreach ($objItem in $NetItems){             if ($objItem.IPAddress.Count -gt 1){                 $TempIpAdderesses = [STRING]$objItem.IPAddress                 $TempIpAdderesses  = $TempIpAdderesses.Trim().Replace(” “, ” ; “)                 $IpAddresses += $TempIpAdderesses             }             else{                 $IpAddresses += $objItem.IPAddress +“; “             }             if ($objItem.{MacAddress}.Count -gt 1){                 $TempMACAddresses = [STRING]$objItem.MACAddress                 $TempMACAddresses = $TempMACAddresses.Replace(” “, ” ; “)                 $MACAddresses += $TempMACAddresses +“; “             }             else{                 $MACAddresses += $objItem.MACAddress +“; “             }             if ($objItem.{DNSServerSearchOrder}.Count -gt 1){                 $TempDNSAddresses = [STRING]$objItem.DNSServerSearchOrder                 $TempDNSAddresses = $TempDNSAddresses.Replace(” “, ” ; “)                 $DNS += $TempDNSAddresses +“; “             }             else{                 $DNS += $objItem.{DNSServerSearchOrder} +“; “             }             if ($objItem.DNSDomainSuffixSearchOrder.Count -gt 1){                 $TempDNSSuffixes = [STRING]$objItem.DNSDomainSuffixSearchOrder                 $TempDNSSuffixes = $TempDNSSuffixes.Replace(” “, ” ; “)                 $DNSSuffix += $TempDNSSuffixes +“; “                 }             else{                 $DNSSuffix += $objItem.DNSDomainSuffixSearchOrder +“; “                 }                 $SubNet = [STRING]$objItem.IPSubnet[0]             $intRowNet = $intRowNet + 1         }         $ServerObj | Add-Member @Member -Name “IP Address” -Value $IpAddresses.substring(0,$ipaddresses.LastIndexOf(“;”))         $ServerObj | Add-Member @Member -Name “IP Subnet” -Value $SubNet         $ServerObj | Add-Member @Member -Name “MAC Address” -Value $MACAddresses.substring(0,$MACAddresses.LastIndexOf(“;”))         $ServerObj | Add-Member @Member -Name “DNS” -Value $DNS         $ServerObj | Add-Member @Member -Name “DNS Suffix Search Order” -Value $DNSSuffix         $ServerObj | Add-Member @Member -Name “DNS Enabled For Wins” -Value $objItem.DNSEnabledForWINSResolution         $ServerObj | Add-Member @Member -Name “Domain DNS Registration Enabled” -Value $objItem.DomainDNSRegistrationEnabled         $ServerObj | Add-Member @Member -Name “Full DNS Registration Enabled” -Value $objItem.FullDNSRegistrationEnabled         $ServerObj | Add-Member @Member -Name “DHCP Enabled” -Value $objItem.DHCPEnabled         $ServerObj | Add-Member @Member -Name “DHCP Lease Obtained” -Value $objItem.DHCPLeaseObtained         $ServerObj | Add-Member @Member -Name “DHCP Lease Expires” -Value $objItem.DHCPLeaseExpires         $AllServers += $ServerObj     } } END{     Write-Output -InputObject $AllServers }

Copy and save the script as Get-ServerDNS.ps1, or download it from TechNet.