Бвстрая проверка открыт ли порт на определенном IP

Socket s = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
s.ReceiveTimeout = 5;
s.SendTimeout = 5;
s.Connect(IPs[i], 3389);

using(TcpClient tcpClient = new TcpClient())
{
    try {
        tcpClient.Connect("127.0.0.1", 9081);
        Console.WriteLine("Port open");
    } catch (Exception) {
        Console.WriteLine("Port closed");
    }
}

public static class SocketExtensions
{
    /// <summary>
    /// Connects the specified socket.
    /// </summary>
    /// <param name="socket">The socket.</param>
    /// <param name="endpoint">The IP endpoint.</param>
    /// <param name="timeout">The timeout.</param>
    public static void Connect(this Socket socket, EndPoint endpoint, TimeSpan timeout)
    {
        var result = socket.BeginConnect(endpoint, null, null);
 
        bool success = result.AsyncWaitHandle.WaitOne(timeout, true);
        if (success)
        {
            socket.EndConnect(result);
        }
        else
        {
            socket.Close();
            throw new SocketException(10060); // Connection timed out.
        }
    }
}

static void Main(string[] args)
        {
 
            Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
            int port = 1000; //example
            IPEndPoint point = new IPEndPoint(IPAddress.Parse("someaddress"), port);
           
            try
            {
              socket.Connect(point, TimeSpan.FromSeconds(5));
            }
            catch (SocketException e)
            {
                if (e.ErrorCode == 10061)
                     Console.WriteLine("Port is closed");
                else if (e.ErrorCode == 10060)
                    Console.WriteLine("TimeOut");
                else Console.WriteLine(e.Message);
            }
        }