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

Discovering hosts with SCTP INIT ping scans


SCTP packets can be used to determine if a host is online by sending SCTP INIT packets and looking for ABORT or INIT ACK responses. Nmap implements this effective technique named SCTP INIT ping scan.

The following recipe describes how to launch SCTP INIT ping scans from Nmap.

How to do it...

Open your terminal and use the -PY option:

# nmap -sn -PY <target>

The output follows the same format as the other types of ping scans:

# nmap -sn -PY scanme.nmap.org
   Nmap scan report for scanme.nmap.org (45.33.32.156) 
   Host is up (0.15s latency). 
   Other addresses for scanme.nmap.org (not scanned):    
   2600:3c01::f03c:91ff:fe18:bb2f 
   Nmap done: 1 IP address (1 host up) scanned in 4.31 seconds 

How it works...

The arguments -sn -PY scanme.nmap.org tell Nmap to send an SCTP INIT ping scan against the host scanme.nmap.org to determine if it's online. Nmap attempts to initiate a connection to a service by sending a SCTP INIT packet and looks for an...