ncrack
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Description:
Network authentication cracking tool
Type: Formula  |  Tracked Since: Dec 28, 2025
Links: Homepage  |  @nmap  |  formulae.brew.sh
Category: Security
Tags: security networking pentesting audit password
Install: brew install ncrack
About:
Ncrack is a high-speed network authentication cracking tool designed for testing the strength of network security. It supports a wide variety of authentication protocols, including RDP, SSH, FTP, and HTTP basic auth. It is optimized for rapidly auditing network credentials and identifying weak passwords.
Key Features:
  • High-performance, parallelized authentication cracking engine
  • Supports numerous network protocols (RDP, SSH, FTP, SMB, HTTP)
  • Dynamic engine capable of handling brute-force and dictionary attacks
  • Flexible specification of user and password lists
Use Cases:
  • Auditing the strength of remote access credentials on a network
  • Penetration testing to identify weak or default passwords on services
  • Verifying the effectiveness of corporate password policies
Alternatives:
  • Hydra – Hydra is a classic and versatile network login cracker, while Ncrack is often noted for its high-speed, parallelized performance engine.
  • Medusa – Medusa is another parallel login cracker, similar in purpose but with a different modular architecture.
Version History
Detected Version Rev Change Commit
Sep 16, 2025 5:03pm 1 VERSION_BUMP 347f6e3e
Sep 16, 2024 3:43pm 1 VERSION_BUMP def3620a