Python Port Scanner A simple and fast multi-threaded TCP Port Scanner built using Python's socket and threading modules. This tool scans a range of ports on a target machine to identify open TCP ports, similar to the basic behavior of tools like Nmap.

Multi-threaded port scanning (fast) TCP connect scanning using socket.connect_ex() Command-line interface Auto time measurement Lightweight & beginner-friendly Great for learning cybersecurity fundamentals How It Works

The scanner attempts to connect to each port in the specified range. If the connection is successful → the port is OPEN.

It uses:

socket for network connections threading for fast parallel scanning sys.argv for command-line arguments time to track how long the scan took Usage

Run the script from terminal or CMD:

python port_scan.py TARGET START_PORT END_PORT