Reflections on CPP Intranet Penetration Techniques

#include <iostream>
#include <boost/>

using boost::asio::ip::tcp;

void tunnel_data(tcp::socket& in_socket, tcp::socket& out_socket) {
    char data[1024];
    boost::system::error_code error;
    size_t length = in_socket.read_some(boost::asio::buffer(data), error);
    if (!error) {
        boost::asio::write(out_socket, boost::asio::buffer(data, length));
    }
}

int main() {
    boost::asio::io_context io_context;

    // Connect to the external client
    tcp::acceptor acceptor(io_context, tcp::endpoint(tcp::v4(), 8888));
    tcp::socket client_socket(io_context);
    (client_socket);

    // Connect to the internal server (., device inside the LAN)
    tcp::resolver resolver(io_context);
    tcp::resolver::results_type endpoints = ("localhost", "80");
    tcp::socket server_socket(io_context);
    boost::asio::connect(server_socket, endpoints);

    // Start tunneling data between client and server
    tunnel_data(client_socket, server_socket);

    return 0;
}