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Ncrack is a high-speed network authentication cracking tool. It was built to help companies secure their networks by proactively testing all their hosts and networking devices for poor passwords. Security professionals also rely on Ncrack when auditing their clients. Ncrack was designed using a modular approach, a command-line syntax similar to Nmap and a dynamic engine that can adapt its behaviour based on network feedback. It allows for rapid, yet reliable large-scale auditing of of multiple hosts.

Ncrack’s features include a very flexible interface granting the user full control of network operations, allowing for very sophisticated bruteforcing attacks, timing templates for ease of use, runtime interaction similar to Nmap’s and many more.

Ncrack was started as a “Google Summer of Code” Project in 2009. While it is already useful for some purposes, it is still unfinished, alpha quality software. It is released as a standalone tool.

Ncrack is available for many different platforms, including Linux, *BSD,Windows and Mac OS X. There are already installers for Windows and Mac OS X and there is a universal source code tarball that can be compiled on every system.

Example: A representative Ncrack scan



$ ncrack 10.0.0.130:21 192.168.1.2:22 Starting Ncrack 0.01ALPHA ( http://ncrack.org ) at 2009-07-24 23:05 EEST

Discovered credentials for ftp on 10.0.0.130 21/tcp:

10.0.0.130 21/tcp ftp: admin hello1

Discovered credentials for ssh on 192.168.1.2 22/tcp:

192.168.1.2 22/tcp ssh: guest 12345

192.168.1.2 22/tcp ssh: admin money$

Ncrack done: 2 services scanned in 156.03 seconds.

Ncrack finished.

Downloads:

http://nmap.org/ncrack/dist/ncrack-0.01ALPHA.tar.gz

http://nmap.org/ncrack/dist/ncrack-0.01ALPHA-setup.exe

http://nmap.org/ncrack/dist/ncrack-0.01ALPHA.dmg

Ncrack Man Page: http://nmap.org/ncrack/man.html

Ncrack Home: http://nmap.org/ncrack

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