Python Port Scanner

This is a simple port scanner made in Python.
You can enter an IPv4 address and a port range, and the program will scan and show which ports are open.

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Features

• Checks if the IP address format is correct
• Checks if the port range format is correct
• Scans all ports in the selected range
• Shows all open ports
• Shows how long the scan took
• Easy to use and simple to read

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How to Run

1. Make sure Python 3 is installed.
2. Save the file as port_scanner.py.
3. Open your terminal.
4. Run the program using:

python3 port_scanner.py

Enter the IP address.

Enter the port range (example: 1-1000).

Example::
#Please Enter your IP address that you want to scan: 192.168.1.10
#Perfect! Valid IP_address '192.168.1.10', Your IP is scanning :)

#Please Enter your port range that you want to scan i.e (int)-(int):: 1-100

Possible Output::
port 22 is open on 192.168.1.10
port 80 is open on 192.168.1.10

Scan Completed in 2.45 seconds


Why I Built This

I built this tool to learn more about networking and Python socket programming.
It helped me understand how ports work and how to scan them safely.

Author

Sachin Shrestha (2025)
GitHub: https://github.com/sachingoray/Python-port-scanner
LinkedIn: https://www.linkedin.com/in/sachin-shrestha-989756181/