🔍 Simple Port Scanner

A lightweight, multithreaded port scanner built in Python. Scan a target host (IP or domain) for open TCP ports and identify known services.

🚀 Features

• Scans a specified range of TCP ports
• Resolves hostnames to IP addresses
• Identifies known services for open ports
• Multithreaded for fast scanning
• Optional output to file

📦 Requirements

All dependencies used are part of the Python standard library (no additional packages required).

🛠️ Usage

python port_scanner.py <target> [options]

##🔧 Options

Option	Description	Default
-p, --ports	Port range to scan (e.g. 1-1024)	1-1024
-t, --threads	Number of threads to use for scanning	100
-o, --output	Save results to a file	None

📌 Examples

Basic scan of default ports (1-1024):

python port_scanner.py example.com

Scan ports 20 to 80 with 50 threads:

python port_scanner.py example.com -p 20-80 -t 50

Scan and save results to scan_results.txt:

python port_scanner.py 127.0.0.1 -o scan_results.txt

⚠️ Disclaimer

This tool is intended for educational and authorized use only. Scanning networks without permission is illegal and unethical.