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

Selecting the correct timing template


Nmap includes six templates that set different timing and performance arguments to optimize your scans. Even though Nmap automatically adjusts some of these values, it is recommended that you set the correct timing template to hint Nmap with a provide as to the speed of your network connection and the target's response time.

The following recipe will teach you about Nmap's timing templates and how to choose the correct one.

How to do it...

Open your terminal and type the following command to use the "aggressive" timing template:

# nmap -T4 -d 192.168.4.20
--------------- Timing report ---------------
  hostgroups: min 1, max 100000
  rtt-timeouts: init 500, min 100, max 1250
  max-scan-delay: TCP 10, UDP 1000, SCTP 10
  parallelism: min 0, max 0
  max-retries: 6, host-timeout: 0
  min-rate: 0, max-rate: 0
---------------------------------------------
...

You may use the integers between 0 and 5, for example -T[0-5].

How it works...

The option -T is used...