volpszz/simple-port-scanner

# Python Port Scanner A simple TCP Port Scanner developed in Python using the built-in `socket` module. This project was created as a practical exercise to strengthen networking fundamentals, understand how TCP connections work, and gain hands-on experience with basic reconnaissance techniques commonly used in cybersecurity. ## Features - TCP port scanning - Hostname to IP resolution - Custom timeout configuration - Detection of open ports - Basic exception handling - Lightweight and easy to understand implementation ## Technologies Used - Python 3 - Socket Library - TCP/IP Networking ## How It Works The scanner: 1. Receives a target hostname or IP address. 2. Resolves the hostname to an IPv4 address. 3. Iterates through a predefined list of ports. 4. Attempts a TCP connection using `socket.connect_ex()`. 5. Reports ports that accept connections. ## Default Ports [53, 22, 80, 111, 139, 443, 32768] ## Installation Clone the repository: git clone https://github.com/yourusername/python-port-scanner.git cd python-port-scanner ## Usage Run the script: python port_scanner.py Example: Insert the target ip: scanme.nmap.org -------------------------------------------------- be patient, scanning... 45.33.32.156 -------------------------------------------------- port 22 aberta! port 80 aberta! port 443 aberta! ## Learning Objectives This project helped me practice: - Python programming - Socket programming - TCP networking concepts - Port scanning fundamentals - Basic cybersecurity reconnaissance techniques - Exception handling ## Disclaimer This project is intended for educational purposes only. Only scan systems and networks that you own or have explicit permission to test. ## Author Arthur Volpato Moreira - Cybersecurity Student - Linux, Networks and Infrastructure Enthusiast - Python Developer