Solved

Change DNS using Powershell

Posted on 2010-11-16
4
1,106 Views
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?
FUNCTION Set-DNSWINS {
#Get NICS via WMI
$Nics = get-WMIObject -class Win32_NetworkAdapterConfiguration -ComputerName $_ -Filter "IPEnabled=TRUE"

foreach ($NIC in $NICs){
$DNSSERVERS = "xxx.xxx.xxx.xxx","xxx.xxx.xxx.xxx"
$NIC.SetDNSServerSearchOrder($DNSServers)
$NIC.SetDynamicDNSRegistration("True")
$NIC.SetWINSServer.count("xxx.xxx.xxx.xxx","xxx.xxx.xxx.xxx") 
}
}

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

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

Open in new window

0
Comment
Question by:Colchester_Institute
  • 2
  • 2
4 Comments
 
LVL 70

Accepted Solution

by:
Chris Dent earned 500 total points
ID: 34144600

Hmm why do you think you can only set two?

This should work:
$DNSServers = "1.2.3.4", "2.3.4.5", "3.4.5.6"
$NIC.SetDNSServerSearchOrder($DNSServers)

Open in new window

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

Chris
0
 
LVL 1

Author Comment

by:Colchester_Institute
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 in...is there a way out of curiosity i can do that?
0
 
LVL 70

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:

HKLM:\System\CurrentControlSet\services\NetBT\parameters\Interfaces\Tcpip_<YourInterface>

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

Get-WmiObject Win32_NetworkAdapterConfiguration -Filter "IPEnabled=$True" | ForEach-Object {
  $_.SetDNSServerSearchOrder($DNSServers)
  $_.SetDynamicDNSRegistration($True)

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

Open in new window

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 :)

HTH

Chris
0
 
LVL 1

Author Comment

by:Colchester_Institute
ID: 34145140
why thank

my manager has said hes not fussed bout the wins but it was for my own learning curve.
0

Featured Post

Netscaler Common Configuration How To guides

If you use NetScaler you will want to see these guides. The NetScaler How To Guides show administrators how to get NetScaler up and configured by providing instructions for common scenarios and some not so common ones.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

"Migrate" an SMTP relay receive connector to a new server using info from an old server.
The Nano Server Image Builder helps you create a custom Nano Server image and bootable USB media with the aid of a graphical interface. Based on the inputs you provide, it generates images for deployment and creates reusable PowerShell scripts that …
Established in 1997, Technology Architects has become one of the most reputable technology solutions companies in the country. TA have been providing businesses with cost effective state-of-the-art solutions and unparalleled service that is designed…

840 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question