How to find out what each server in my domain is using for dns

[ancientcontra]

Hi we have recently decomissioned a DNS server, and I wanted to know if there was a script I could use to search the directory looking for all the dns servers that are being used by the servers, as obviously they have been set manually.

ANY help would be magic!

Nick Cutting
MSCA CCNA A+ CCNP

 

[ancientcontra]

After I have a text file with a list of servers I can then use psexec to run :

psexec \\<servername> ipconfig /all > dns.txt

then extract all the dns info to another file ? exect I have no idea how

Nick Cutting
MSCA CCNA A+ CCNP

 

[ITPangaeaArchitect]

forget about searching AD for the information, as its not held there.

if you go off of your plan, you should be able to follow up with a find /i "DNS" <path to file> to search teh file for the DNS server.

you could also pull this information from the registry....specifically inside of HKLM\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\Interfaces\<NIC GUID>

the value in there is called NameServer

-Brandon Wilson
MCSE:Security00/03
MCSA:Messaging00
MCSA:Security03
A+

 

[ancientcontra]

hey I figured it out with Powershell. Thanks for the tips

Where snick is my server list :

$cred = get-credential

Function Check-DNS
{
Write-host "DNS servers for $strComputer"
Get-WmiObject -Class Win32_NetworkAdapterConfiguration -comp $strComputer | select-object -property DNSServerSearchOrder
Write-host "_____________________________________________________"

}

foreach ($strComputer in get-content c:\snick.txt)
{
Check-DNS
}

Nick Cutting
MSCA CCNA A+ CCNP

 

[ITPangaeaArchitect]

there ya go..powershell is pulling from the registry locations, as a wmi call would in a vbscript, so youll definitely be good to go. im glad you got it worked out

-Brandon Wilson
MCSE:Security00/03
MCSA:Messaging00
MCSA:Security03
A+