[Router] Apertura porte Atlantis per protocollo TCP

[pesapower]

In pratica ho un router Atlantis ma non riesco lo stesso a collegarmici con un programma in C#, anche con la porta aperta e il firewall disattivato

posto il codice del programma se può servire:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net;
using System.Net.Sockets;
using System.Threading;



namespace ConsoleApplication1
{
    class Program
    {
        class TCP
        {
            static string localIP = "192.168.1.102";
            static int port = 789;

            public static string GetRemoteIP()
            {
                try
                {
                    string whatIsMyIp = "http://www.whatismyip.com/automation/n09230945.asp";
                    WebClient wc = new WebClient();
                    UTF8Encoding utf8 = new UTF8Encoding();
                    string requestHtml = "";

                    requestHtml = utf8.GetString(wc.DownloadData(whatIsMyIp));

                    IPAddress externalIp = null;

                    externalIp = IPAddress.Parse(requestHtml);

                    string string_externalIp = externalIp.ToString();

                    return string_externalIp;
                }
                catch
                {
                    return null;
                }
            }


            public static void accConn()
            {
                /*
                TcpListener listener = new TcpListener(IPAddress.Any, 7000);

                Console.WriteLine(GetRemoteIP());

                listener.Start();

                listener.AcceptSocket();
                */

                EndPoint ep = new IPEndPoint(IPAddress.Parse(localIP), port);

                Socket listener = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);

                listener.Bind(ep);

                listener.Listen(5);

                listener.Accept();

                //listener.Start();

                //listener.AcceptSocket();

                Console.WriteLine("Connessione ACCETTATA!!!");
                Console.ReadKey();
            }

            public static void Conn()
            {
                TcpClient client = new TcpClient();
                client.Connect(GetRemoteIP(), port);
                Console.WriteLine("Connessione EFFETTUATA!!!");
                Console.ReadKey();
            }
        }

        static void Main(string[] args)
        {
            Thread listener = new Thread(TCP.accConn);
            Thread client = new Thread(TCP.Conn);

            listener.Start();
            Console.WriteLine("Listener avviato");

            client.Start();
            Console.WriteLine("Client avviato");

            Console.ReadKey();
        }
    }
}