Created
February 4, 2023 17:09
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Port Scanning In CPP
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#include <iostream> | |
#include <cstring> | |
#include <unistd.h> | |
#include <sys/socket.h> | |
#include <netinet/in.h> | |
#include <arpa/inet.h> | |
#include <vector> | |
using namespace std; | |
vector<int> ports = {21, 22, 23, 25, 80, 110, 443}; | |
int main(int argc, char* argv[]) { | |
if (argc != 2) { | |
cout << "Usage: %s <IP address>" << endl; | |
return -1; | |
} | |
char* target = argv[1]; | |
for (int port : ports) { | |
int sock = socket(AF_INET, SOCK_STREAM, 0); | |
if (sock == -1) { | |
cout << "Could not create socket." << endl; | |
return -1; | |
} | |
sockaddr_in addr; | |
memset(&addr, 0, sizeof(addr)); | |
addr.sin_family = AF_INET; | |
addr.sin_port = htons(port); | |
inet_pton(AF_INET, target, &addr.sin_addr); | |
int res = connect(sock, (sockaddr*) &addr, sizeof(addr)); | |
if (res == -1) { | |
cout << "Port " << port << " is closed." << endl; | |
} else { | |
cout << "Port " << port << " is open." << endl; | |
} | |
close(sock); | |
} | |
return 0; | |
} |
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