function Add-ExcludedPortRange {
    param (
        [Parameter(Mandatory = $true)][int]$startport,
        [Parameter(Mandatory = $true)][int]$numberofports
    )
    Invoke-Expression "net stop winnat"
    foreach ($ip in ("ipv4", "ipv6")) {
        foreach ($protocol in ("tcp", "udp")) {
            $showCommand = "netsh interface $ip show excludedportrange protocol=$protocol"
            $addCommand = "netsh interface $ip add excludedportrange protocol=$protocol startport=$startport numberofports=$numberofports"
            Write-Host "$ $showCommand"
            Invoke-Expression $showCommand
            Write-Host "$ $addCommand"
            Invoke-Expression $addCommand
        }
    }
    Invoke-Expression "net start winnat"
}