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

Scanning through proxies


One of the important additions in recent versions is HTTP and SOCKS4 proxy support. By scanning through a proxy, we can mask the origin IP address, but we should consider the additional latency introduced.

This recipe will show you how to tunnel your scans through proxies.

How to do it...

Open a terminal and enter the following command:

# nmap -sV -Pn -n --proxies <comma separated list of proxies> <target>

This feature is implemented within Nsock, and not all Nmap features are supported. You need to be careful to avoid accidentally disclosing your origin IP address. For example, to scan a host through TOR, we can use this:

# nmap -sV -Pn -n --proxies socks4://127.0.0.1:9050 scanme.nmap.org
   Nmap scan report for scanme.nmap.org (45.33.32.156) 
   Host is up (0.13s latency). 
   Other addresses for scanme.nmap.org (not scanned):     
   2600:3c01::f03c:91ff:fe18:bb2f 
   PORT   STATE SERVICE VERSION 
   80/tcp open  http    Apache httpd 2.4.7 ((Ubuntu))  
...