Book Image

Nmap 6: Network Exploration and Security Auditing Cookbook

Book Image

Nmap 6: Network Exploration and Security Auditing Cookbook

Overview of this book

Nmap is a well known security tool used by penetration testers and system administrators. The Nmap Scripting Engine (NSE) has added the possibility to perform additional tasks using the collected host information. Tasks like advanced fingerprinting and service discovery, information gathering, and detection of security vulnerabilities."Nmap 6: Network exploration and security auditing cookbook" will help you master Nmap and its scripting engine. You will learn how to use this tool to do a wide variety of practical tasks for pentesting and network monitoring. Finally, after harvesting the power of NSE, you will also learn how to write your own NSE scripts."Nmap 6: Network exploration and security auditing cookbook" is a book full of practical knowledge for every security consultant, administrator or enthusiast looking to master Nmap. The book overviews the most important port scanning and host discovery techniques supported by Nmap. You will learn how to detect mis-configurations in web, mail and database servers and also how to implement your own monitoring system. The book also covers tasks for reporting, scanning numerous hosts, vulnerability detection and exploitation, and its strongest aspect; information gathering.
Table of Contents (18 chapters)
Nmap 6: Network Exploration and Security Auditing Cookbook
Credits
About the Author
Acknowledgement
About the Reviewers
www.PacktPub.com
Preface
References
Index

Discovering hosts using broadcast pings


Broadcast pings send ICMP echo requests to the local broadcast address, and even if they do not work all the time, they are a nice way of discovering hosts in a network without sending probes to the other hsts.

This recipe describes how to discover new hosts with a broadcast ping using Nmap NSE.

How to do it...

Open your terminal and type the following command:

# nmap --script broadcast-ping 

You should see the list of hosts that responded to the broadcast ping:

Pre-scan script results: 
| broadcast-ping: 
|   IP: 192.168.1.105  MAC: 08:00:27:16:4f:71 
|   IP: 192.168.1.106  MAC: 40:25:c2:3f:c7:24 
|_  Use --script-args=newtargets to add the results as targets 
WARNING: No targets were specified, so 0 hosts scanned. 
Nmap done: 0 IP addresses (0 hosts up) scanned in 3.25 seconds 

How it works...

A broadcast ping works by sending an ICMP echo request to the local broadcast address 255.255.255.255, and then waiting for hosts to reply with an ICMP echo...