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Educational and ethical use only. Only test systems you own or are explicitly authorized to test. Full disclaimer.

legion

Semi-automated network penetration testing tool

network-informationreconnaissanceRed Team

Matches ATT&CK tactic: Reconnaissance ↗

Official docs ↗Download ↗Source repo ↗

Platforms: Linux · Last verified September 6, 2026

This package contains an open source, easy-to-use, super-extensible and semi-automated network penetration testing tool that aids in discovery, reconnaissance and exploitation of information systems.

Only use this tool against systems you own or are explicitly authorized to test — see the disclaimer.

Getting started

See the official Kali tool page and upstream homepage linked above for installation and usage details.

Commonly preinstalled on

Kali Linux

Debian-based distribution built for penetration testing and security auditing