Port Scanner

Overview

This project implements a simple command-line port scanner in C++, demonstrating basic socket programming concepts. It scans a range of TCP ports on a specified IP address and determines which ports are open.

Project Structure

The project consists of the following files:

• main.cpp: Contains the main function serving as the entry point of the program.
• PortScanner.h: Header file declaring the PortScanner class.
• PortScanner.cpp: Implementation file defining the methods of the PortScanner class.

How to Use

Compilation

To compile the port scanner:

g++ -std=c++11 -c main.cpp PortScanner.cpp
g++ -o portscanner main.o PortScanner.o

Execution

To run the port scanner:

./portscanner <target_ip>

Sample Execution

Assuming the target IP address is 127.0.0.1, a sample execution would look like this:

./portscanner 127.0.0.1

Sample Output

Scanning ports for target IP: 127.0.0.1
Port 22 is open
Port 80 is open
Scan completed. Open ports: 22 80

Note

The port scanner scans ports from 1 to 65535. It uses socket programming to establish connections and determine open ports. Error messages are printed for any issues encountered during scanning.