Validate an IP address in PowerShell
Today I needed to validate an IP address after a user types it in to a script. I don’t want to ping or check connectivity, I just want to validate that the format looks like a valid IP address. I looked at various regex expressions which were getting complicated. Then I stumbled upon this little nugget:
This little PowerShell snippet uses a .NET method to validate that our address is in a valid format.
IF ([BOOL]($newIP -as [IPADDRESS])){
Write-Host "is a valid address"
} else {
write-Host -ForegroundColor Red "is an invalid address"
break
}
Though do note that it only validates the format.
Enjoy.
Posted on August 17, 2012 at 19:57 by simon · Permalink
In: Power Shell · Tagged with: .NET, ip address, validate
In: Power Shell · Tagged with: .NET, ip address, validate
on 18 January 2017 at 13:20
· Permalink
This has the same issue as other IP validates have, they don’t work correctly. Yes your script works, but if you only put in 3 octets of the IP it says its valid, huh?