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();

                    }

                }

            }

        }

    }