Book Image

Nmap: Network Exploration and Security Auditing Cookbook - Second Edition

By : Paulino Calderon
Book Image

Nmap: Network Exploration and Security Auditing Cookbook - Second Edition

By: Paulino Calderon

Overview of this book

This is the second edition of ‘Nmap 6: Network Exploration and Security Auditing Cookbook’. A book aimed for anyone who wants to master Nmap and its scripting engine through practical tasks for system administrators and penetration testers. Besides introducing the most powerful features of Nmap and related tools, common security auditing tasks for local and remote networks, web applications, databases, mail servers, Microsoft Windows machines and even ICS SCADA systems are explained step by step with exact commands and argument explanations. The book starts with the basic usage of Nmap and related tools like Ncat, Ncrack, Ndiff and Zenmap. The Nmap Scripting Engine is thoroughly covered through security checks used commonly in real-life scenarios applied for different types of systems. New chapters for Microsoft Windows and ICS SCADA systems were added and every recipe was revised. This edition reflects the latest updates and hottest additions to the Nmap project to date. The book will also introduce you to Lua programming and NSE script development allowing you to extend further the power of Nmap.
Table of Contents (25 chapters)
Title Page
Credits
About the Author
Acknowledgments
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface
13
Brute Force Password Auditing Options
17
References and Additional Reading

Distributing a scan among several clients using Dnmap


Dnmap is an excellent project in order to distribute Nmap scans among different clients. The extra resources available (CPU and bandwidth) allow us to scan more targets faster when time is a limiting factor. Although there are other port scanners designed for speed, Dnmap has the advantage of having the Nmap Scripting Engine script arsenal available.

The following recipe will show you how to perform distributed port scanning with Dnmap.

Getting ready

Download the latest version of Dnmap from the official SourceForge repositories at https://sourceforge.net/projects/dnmap/files/.

Dnmap depends on Python's twisted library. If you are on a Debian-based system, you can install it with the following command:

#apt-get install libssl-dev python-twisted

It is also worth mentioning that Nmap is not self-contained in Dnmap; we must install it separately on each client. Please refer to the Compiling Nmap from source code recipe in Chapter 1, Nmap Fundamentals...