Scripts/Get-IpAddressRange.ps1
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Param([Parameter(Mandatory)][string[]]$Network) function Get-IpAddressRange { Param([Parameter(Mandatory)][string[]]$Network) <# .SYNOPSIS Given a network ID in CIDR notation, returns an array of IPv4 address strings. .DESCRIPTION Given a network ID in CIDR notation, returns an array of IPv4 address strings. .PARAMETER Network Specifies the network ID in CIDR notation. .INPUTS None. You cannot pipe objects to Get-IpAddressRange. .OUTPUTS System.Array. Get-IpAddressRange returns an array of IPv4 address strings. .EXAMPLE .\Get-IpAddressRange.ps1 -Network 192.168.2.0/30 192.168.2.1 192.168.2.2 .EXAMPLE .\Get-IpAddressRange.ps1 -Network 192.168.2.0/30, 192.168.3.0/30 192.168.2.1 192.168.2.2 192.168.3.1 192.168.3.2 .EXAMPLE .\Get-IpAddressRange.ps1 -Network 192.168.2.1/32 192.168.2.1 .LINK https://github.com/cyberphor/scripts/Get-IpAddressRange.ps1 .NOTES https://community.spiceworks.com/topic/649706-question-on-splitting-a-string-in-powershell https://devblogs.microsoft.com/scripting/use-powershell-to-easily-convert-decimal-to-binary-and-back/ https://stackoverflow.com/questions/28460208/ what-is-the-idiomatic-way-to-slice-an-array-relative-to-both-of-its-ends https://community.idera.com/database-tools/powershell/powertips/b/tips/posts/ converting-binary-data-to-ip-address-and-vice-versa #> function ConvertIpAddressTo-BinaryString { Param([IPAddress]$IpAddress) $Integer = $IpAddress.Address $ReverseIpAddress = [IPAddress][String]$Integer $BinaryString = [Convert]::toString($ReverseIpAddress.Address,2) return $BinaryString } function ConvertBinaryStringTo-IpAddress { Param($BinaryString) $Integer = [System.Convert]::ToInt64($BinaryString,2).ToString() $IpAddress = ([System.Net.IPAddress]$Integer).IpAddressToString return $IpAddress } $IpAddressRange = @() $Network | foreach { if ($_.Contains('/')) { $NetworkId = $_.Split('/')[0] $SubnetMask = $_.Split('/')[1] if ([ipaddress]$NetworkId -and ($SubnetMask -eq 32)) { $IpAddressRange += $NetworkId } elseif ([ipaddress]$NetworkId -and ($SubnetMask -le 32)) { $Wildcard = 32 - $SubnetMask $NetworkIdBinary = ConvertIpAddressTo-BinaryString $NetworkId $NetworkIdIpAddressBinary = $NetworkIdBinary.SubString(0,$SubnetMask) + ('0' * $Wildcard) $BroadcastIpAddressBinary = $NetworkIdBinary.SubString(0,$SubnetMask) + ('1' * $Wildcard) $NetworkIdIpAddress = ConvertBinaryStringTo-IpAddress $NetworkIdIpAddressBinary $BroadcastIpAddress = ConvertBinaryStringTo-IpAddress $BroadcastIpAddressBinary $NetworkIdInt32 = [convert]::ToInt32($NetworkIdIpAddressBinary,2) $BroadcastIdInt32 = [convert]::ToInt32($BroadcastIpAddressBinary,2) $NetworkIdInt32..$BroadcastIdInt32 | foreach { $BinaryString = [convert]::ToString($_,2) $Address = ConvertBinaryStringTo-IpAddress $BinaryString if ($Address -ne $NetworkIdIpAddress -and $Address -ne $BroadcastIpAddress) { $IpAddressRange += $Address } } } } } return $IpAddressRange } Get-IpAddressRange $Network |