Port-Scanner

Multithreaded TCP Port Scanner

A simple Python port scanner that checks for open TCP ports on a target host using multithreading.

The project demonstrates basic socket programming, concurrency, and port scanning techniques.

Files

• Port-Scanner/portscanner.py – multithreaded TCP port scanner

Overview

• Scans ports 1–1023 on a target host
• Uses TCP sockets (SOCK_STREAM)
• Performs concurrent scans using Python threads
• Collects and prints open ports

How It Works

1. A queue is filled with port numbers to scan.
2. Multiple worker threads consume ports from the queue.
3. Each worker attempts a TCP connection to a port.
4. Successfully connected ports are reported as open.

Running the Scanner

Requirements

• Python 3.9+

Run the scanner:

python Port-Scanner/portscanner.py

Configuration
- Change the target host by modifying:

target = "127.0.0.1"

- Adjust scan range:

port_list = range(1, 1024)

- Adjust concurrency:

for t in range(300):

Notes

• This scanner uses a basic TCP connect scan (no stealth).
• High thread counts may stress the target or the local system.
• Intended for educational purposes and authorized testing only.