How I Built a Python Network Scanner That Thinks Like an Attacker

📰 Dev.to · Sanketh Subhas

Build a Python network scanner that thinks like an attacker to identify open ports and score their risk, and learn how to apply this knowledge to improve network security

intermediate Published 8 Mar 2026
Action Steps
  1. Build a Python script using Scapy to scan for open ports
  2. Configure the script to score the risk of each open port
  3. Use a mapping library like Graphviz to visualize the network topology
  4. Test the scanner on a local network to identify vulnerabilities
  5. Apply the knowledge gained to improve network security and configure firewalls
Who Needs to Know This

Security teams and network administrators can benefit from this tool to identify vulnerabilities and improve network security. Developers can also learn from the approach and techniques used to build the scanner

Key Insight

💡 Identifying open ports and scoring their risk can help improve network security by highlighting potential vulnerabilities

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🔍 Build a Python network scanner that thinks like an attacker to identify open ports and score their risk! 💻

Full Article

Open ports are open doors. Here's how I built a tool that finds them, scores the risk, and maps every...
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