Change DNS using Powershell

Posted on 2010-11-16
Last Modified: 2012-05-10
Hi there.

I've managed to find the attached powershell script that allows me to change dns setting on a server.

If works fine except that i can only add two addresses.

I'm looking to add more than that within the advanced setting on the nic.  how do i go about this?
#Get NICS via WMI
$Nics = get-WMIObject -class Win32_NetworkAdapterConfiguration -ComputerName $_ -Filter "IPEnabled=TRUE"

foreach ($NIC in $NICs){

function Get-filename{
$computer = "e:\Txt_Files\dns.txt"
return $Computer

$f = Get-Filename
get-content $f | foreach {set-DNSWINS}

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Question by:Colchester_Institute
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LVL 71

Accepted Solution

Chris Dent earned 500 total points
ID: 34144600

Hmm why do you think you can only set two?

This should work:
$DNSServers = "", "", ""

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There's no reason to limit the number there to two.


Author Comment

ID: 34144667
ahh yes that works...

it was my own fault also where i'd played around with the syntax

it doesnt however let me put more than two wins addresses there a way out of curiosity i can do that?
LVL 71

Expert Comment

by:Chris Dent
ID: 34144887

Unfortunately the SetWINSServer method is a bit limited, NetSh should be able to do it, but I can't seem to get the syntax right for more than one address.

The last resort is hitting the registry, WINS addresses hide here:


There's a NameServerList beneath that. We can set that like this:
$DnsServers = "","", ""
[String[]]$WinsServers = "yyy.yyy.yyy.yyy", "yyy.yyy.yyy.yyy", "yyy.yyy.yyy.yyy"

Get-WmiObject Win32_NetworkAdapterConfiguration -Filter "IPEnabled=$True" | ForEach-Object {

  Set-ItemProperty -Path "HKLM:\System\CurrentControlSet\services\NetBT\parameters\Interfaces\Tcpip_$($_.SettingID)" `
    -Name "NameServerList" -Value $WinsServers

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Note that we have to force $WinsServers to be a String array (String[]) or it'll tell us to get lost.

A bit more convoluted that I prefer, but it should work :)



Author Comment

ID: 34145140
why thank

my manager has said hes not fussed bout the wins but it was for my own learning curve.

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