Python Port Scanner Tutorial | Network Scanning Basics for Security #python #nmap #portscanner

YouTube Excerpt: In this video, I walk you through creating a simple Python port scanner from scratch, inspired by nmap, to help you understand how network scanning works. This tutorial is beginner-friendly and based on a project I did in the past. It’s not meant to be a deep dive, there are plenty of tutorials that go much further, but it’s a great way to learn the basics of sockets and enrich your understanding of device communication. I’ve also tailored some of the explanations toward ICS/OT topics and fundamentals, hoping to make it more practical for those familiar with the ICS world. (Quick note: I forgot to mention this in the video, but I also include a simple pentesting demo to show what attackers could do after scanning your devices if they gain access to your network.) What you’ll learn in this video: • Understanding IP addresses, ports, and sockets • Using Python’s socket library to scan ports • Handling multiple ports and displaying results • Capturing banner information from open ports • Fun examples of pentesting practices using Metasploitable2 ⚠️ Disclaimer: This video is strictly for educational purposes. Do not use this knowledge for unauthorized scanning. Always scan systems you own or have explicit permission to scan. If you’re curious how tools like nmap work and want to build your own Python-based network tools, this tutorial is a great place to start. ✅ Don’t forget to like, subscribe, and hit the notification bell for more ICS/OT cybersecurity and Python and Codesys tutorials! For ICS codesys structured text resources visit: https://www.hedgetechsystems.com/micro-templates

In this video, I walk you through creating a simple Python port scanner from scratch, inspired by nmap, to help you understand how network scanning...