Private/TestIPAddressIsPrivate.ps1
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function TestIPAddressIsPrivate { [CmdletBinding()] param( [ipaddress]$IPAddress ) begin{ $privateRanges = @( [pscustomobject]@{IPAddress = [ipaddress]'10.0.0.0';Mask = [ipaddress]'255.0.0.0';DefaultSubnetMask = [ipaddress]'255.0.0.0';Class = 'A'} [pscustomobject]@{IPAddress = [ipaddress]'172.16.0.0';Mask = [ipaddress]'255.240.0.0';DefaultSubnetMask = [ipaddress]'255.255.0.0';Class = 'B'} [pscustomobject]@{IPAddress = [ipaddress]'192.168.0.0';Mask = [ipaddress]'255.255.0.0';DefaultSubnetMask = [ipaddress]'255.255.255.0';Class = 'C'} ) } process{ $isPrivate = $false foreach($range in $privateRanges){ $isPrivate = $isPrivate -or (($IPAddress.Address -band $range.Mask.Address) -eq $range.IPAddress.Address) } if($isPrivate){ Write-Verbose -Message "Is private IP range '$($range.Class)'" } if(($IPAddress.Address -band ([ipaddress]'255.255.0.0').Address) -eq ([IPAddress]'169.254.0.0').Address){ Write-Verbose -Message "Is APIPA address" } $isPrivate } end{} } |