Setting Google DNS with powershell

  • Article

My local ISP's router won't let me modify dns settings in it's dhcp table. (no drew Joy), now I'm going to have to add a separate router.. while I waiting for my router, I created the following powershell code to point my boxes to google dns.

The  following PS code will:

  1. look for a nic with an active gateway
  2. apply google dns server definitions for both ipv4 and ipv6 

Tested on Windows 8.1, 10, W2k12R2, W2k16

#requires admin ps (changing dns), Powershell 3+ (use $PSVersionTable to PS version)

#CODE

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 # Show current settingsGet-DnsClientServerAddress# look for nic w/ gateway$GWNic=(Get-NetIPConfiguration -All |Where {$_.IPv4DefaultGateway -ne $null}).interfaceindex# set dns servers to both ipv4/ipv6, reference https://developers.google.com/speed/public-dns/docs/usingSet-DnsClientServerAddress -InterfaceIndex $GWNic -ServerAddresses ("8.8.8.8","8.8.4.4","2001:4860:4860::8888","2001:4860:4860::8844")# ConfirmationGet-DnsClientServerAddress

#

 

Updated the following for CloudFlare DNS

# Show current settings
Get-DnsClientServerAddress
# look for nic w/ gateway
$GWNic=(Get-NetIPConfiguration -All |Where {$_.IPv4DefaultGateway -ne $null}).interfaceindex

# set dns servers to both ipv4/ipv6, #Reference: https://blog.cloudflare.com/dns-resolver-1-1-1-1/
Set-DnsClientServerAddress -InterfaceIndex $GWNic -ServerAddresses ("1.1.1.1","1.0.0.1","2606:4700:4700::1111","2606:4700:4700::1001")

# Confirmation
Get-DnsClientServerAddress