Port Scanner Class

Güzel bir örnek oldu basit ve hızlı..

public class PortScanner
{
    public List<int> ActivePorts = new List<int>();
    public List<int> InactiveReports = new List<int>();

    public void Scan(string IP, int startPort, int endPort)
    {
        Socket Sock = null;

        for (int Port = startPort; Port <= endPort; Port++)
        {
            try
            {
                Sock = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
                Sock.Connect(IP, Port);

                ActivePorts.Add(Port);
            }
            catch (SocketException ex)
            {
                InactiveReports.Add(Port);
            }
            finally
            {
                if (Sock!=null)
                {
                    if (Sock.Connected)
                        Sock.Disconnect(false);
                    Sock.Close();
                }
            }
        }
    }
}