PowerScript: Network IP

network_ip.ps1

function Get-Network-From-CIDR([String]$CIDR) {
  $Parsed = $CIDR -split "/"
  $IP = [IPAddress]$Parsed[0]
  $Length = [Int]$Parsed[1]
  $SubnetMask = [IPAddress](([Math]::Pow(2, 32) - 1) -bxor ([Math]::Pow(2, (32 - $Length)) - 1))
  $IP = [IPAddress]($IP.Address -band $SubnetMask.Address)
  return New-Object PSObject -Property @{
    IP = $IP;
    SubnetMask = $SubnetMask
  }
}

function Test-Including-Network([IPAddress]$IP, [PSObject]$Network) {
  $IPNetwork = [IPAddress]($IP.Address -band $Network.SubnetMask.Address)
  return $IPNetwork.Address -eq $Network.IP.Address
}