Port Scanner in C++
A simple port scanner written in C++ which checks for certain ports such as HTTP and FTP.
#include <windows.h> #include <string> #include <winsock2.h> #include <cstring> #include <fstream> #include <cstdlib> #include <iostream> using namespace std; char target[MAX_PATH]; int ports = 21; int http = 80; SOCKET Socket; WSADATA WsaDat; SOCKADDR_IN server; int core() { if (WSAStartup(MAKEWORD(2,2), &WsaDat) != 0){ return 0; } Socket = socket(AF_INET, SOCK_STREAM, 0); if (Socket == SOCKET_ERROR){ return 0; } server.sin_port=htons (ports); server.sin_family = AF_INET; server.sin_addr.s_addr=inet_addr(target); if(connect(Socket,(SOCKADDR*)(&server),sizeof(server))==SOCKET_ERROR) { cout<<""; } else { cin.get(); cout<<"21 (ftp) is open\n"; cin.get(); closesocket(Socket); } SOCKADDR_IN meow; meow.sin_port=htons (http); meow.sin_family = AF_INET; server.sin_addr.s_addr=inet_addr (target); if (connect(Socket, (SOCKADDR *) (&meow), sizeof (meow))==SOCKET_ERROR){ cin.get(); cout<<"No ports opened on system!\n"; cin.get(); } else { cin.get(); cout<<"80 (http) is open\n"; cin.get(); closesocket(Socket); WSACleanup(); } } int main() { cout<<"Welcome to Portscanner tester 2.0\n"; cout<<"Please enter a target...: "; cin>> target; cout<<"Ok lets begin.....\n"; Sleep(3000); core(); return 0; }

This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
Download this code in plain text format here