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Nmap: Network Exploration and Security Auditing Cookbook

You're reading from   Nmap: Network Exploration and Security Auditing Cookbook Network discovery and security scanning at your fingertips

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Product type Paperback
Published in May 2017
Publisher
ISBN-13 9781786467454
Length 416 pages
Edition 2nd Edition
Languages
Tools
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Author (1):
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Paulino Calderon Paulino Calderon
Author Profile Icon Paulino Calderon
Paulino Calderon
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Toc

Table of Contents (18) Chapters Close

Preface 1. Nmap Fundamentals 2. Network Exploration FREE CHAPTER 3. Reconnaissance Tasks 4. Scanning Web Servers 5. Scanning Databases 6. Scanning Mail Servers 7. Scanning Windows Systems 8. Scanning ICS SCADA Systems 9. Optimizing Scans 10. Generating Scan Reports 11. Writing Your Own NSE Scripts 12. HTTP, HTTP Pipelining, and Web Crawling Configuration Options 13. Brute Force Password Auditing Options 14. NSE Debugging 15. Additional Output Options 16. Introduction to Lua 17. References and Additional Reading

Enumerating Modbus devices

Modbus TCP/IP is a communication protocol used for transmitting information by many SCADA devices. It is considered one of the most popular open protocols and it is possible to find valid slave IDs and obtain information about the device and software remotely.

This recipe shows you how to enumerate Modbus Slave IDs (SIDs) with Nmap.

How to do it...

Open your terminal and enter the following Nmap command:

$ nmap -Pn -sT -p502 --script modbus-discover <target>  

By default, the script modbus-discover will obtain the first slave ID device information, as shown next. The information displayed depends on the device's response:

   PORT    STATE SERVICE 
502/tcp open modbus
| modbus-discover:
| sid0x0:
...
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