Multi-threaded Port Scanner & Banner Grabber in Python

A concurrent TCP port scanner and service banner grabber built with Python’s socket and concurrent.futures modules, designed for authorized reconnaissance and network benchmarking.

CLI Demonstration

Port Scanner CLI Demonstration Figure: Active scan on scanme.nmap.org demonstrating concurrent port detection, banner retrieval (HTTP & SSH), and scan benchmarks.

Key Features

Concurrent Execution: Configurable worker pool via ThreadPoolExecutor for fast multi-threaded scanning.
Service Banner Grabbing: Automatic service discovery and version identification across open TCP sockets.
Flexible Targets & Ranges: Supports single IPs, domains, explicit port lists (-p 22,80,443), top 100 ports, and custom ranges (1-1024).
Export Formats: Structured export capabilities to JSON and standard text logs.

Usage Examples

# Scan Top 100 standard ports
python port_scanner.py 192.168.1.1 --top100

# Target specific ports with custom thread count and timeout
python port_scanner.py scanme.nmap.org -p 22,80,443 -w 100 -t 1.0

# Export results to JSON
python port_scanner.py target.local -p 1-1024 -o scan_results.json

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## 📦 Repository & Source Code

Source code and CLI documentation are available on GitHub:

👉 [https://github.com/EfeOzhan48/-port-scanner](https://github.com/EfeOzhan48/-port-scanner)