#include <winsock2.h>
#include <windows.h>     
#include <iostream>
#include <sys/types.h>
 
#pragma comment(lib, "Ws2_32.lib")
using namespace std;
 
char IP[20];
int startPort, endPort, err, nret;
 
 
 
int main()
{
        int i;
	struct sockaddr_in conect;
	SOCKET iSocket;
    WSADATA wsaData;
     if (WSAStartup(MAKEWORD(2,0), &wsaData) != 0 )
   {
      cout << "Winsock Error, Exiting..." << endl;
      cin.get();
      return 0;
   }
 
   cout << "Target IP: ";
   cin>>IP;
   cout << "Starting Port: ";
   cin>>startPort;
   cout << "End Port: ";
   cin>>endPort;
 
   cin.ignore();
 
   cout << endl << endl << "Scanning..." << endl << endl;
 
   for( i=startPort; i <= endPort; i++)
   {
 
      iSocket = socket(AF_INET, SOCK_STREAM, 0);
      if (iSocket == -1)
      	cout<<"error al abrir el socket";
 	  conect.sin_addr.S_un.S_addr = inet_addr(IP);
      conect.sin_family = AF_INET;
      conect.sin_port = htons(startPort);
 
	  nret = bind(iSocket, (struct sockaddr *)&conect, sizeof(conect));
 
      if( nret == 0)
      {
         cout << "Port " << i << " - OPEN! " << endl;
      }
      else 
      {
      cout <<"puerto no abir}erto";
      getchar();
      }
      closesocket(iSocket);
    }
    cout << endl << "Finished With Scan..." << endl;
 
    cin.get();
    WSACleanup();
}