[PowerShell] Firewall Dropbox Lan Sync

block-dropbox-lan-sync.ps1

$myWindowsID = [System.Security.Principal.WindowsIdentity]::GetCurrent();
$myWindowsPrincipal = New-Object System.Security.Principal.WindowsPrincipal($myWindowsID);
$adminRole = [System.Security.Principal.WindowsBuiltInRole]::Administrator;
if ($myWindowsPrincipal.IsInRole($adminRole))
{
    $Host.UI.RawUI.WindowTitle = $myInvocation.MyCommand.Definition + "(Elevated)";
    $Host.UI.RawUI.BackgroundColor = "DarkBlue";
    Clear-Host;
}
else {
    $newProcess = New-Object System.Diagnostics.ProcessStartInfo "PowerShell";
    $newProcess.Arguments = "& '" + $script:MyInvocation.MyCommand.Path + "'"
    $newProcess.Verb = "runas";
    [System.Diagnostics.Process]::Start($newProcess);
    Exit;
}
New-NetFirewallRule -DisplayName "Block Dropbox Lan Sync" -Direction Outbound -RemotePort 17500 -Protocol UDP -Action Block
New-NetFirewallRule -DisplayName "Block Dropbox Lan Sync" -Direction Inbound -LocalPort 17500 -Protocol UDP -Action Block
Write-Host -NoNewLine "Press any key to continue...";
$null = $Host.UI.RawUI.ReadKey("NoEcho,IncludeKeyDown");