The article presents a guide on building a simple network vulnerability scanner using Go. It stresses the importance of penetration testing for identifying and mitigating security weaknesses. The first steps include setting up a Go project and configuring packages essential for the scanner's functionality. Key emphasis is placed on ethical considerations, underscoring the legal risks associated with unauthorized network scanning. Users are advised to obtain explicit permission, define scope, avoid aggressive scans, and disclose any discovered vulnerabilities responsibly.
Penetration testing enables organizations to target potential security weaknesses in a network and provide a need to fix vulnerabilities before they are compromised by a malicious actor.
We want to build a simple CLI tool that would be able to scan a network of hosts, find open ports, running services and discover possible vulnerabilities.
Before we jump into implementation, we should touch on some ethical considerations around network scanning. Unauthorized network scanning or enumeration is illegal in many parts of the world.
You must always follow these rules: Only scan networks and systems that you own or have explicit permission to scan.
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