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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

Product type Paperback

Published in May 2017

Publisher

ISBN-13 9781786467454

Length 416 pages

Edition 2nd Edition

Languages

Lua

Tools

Nmap

Concepts

Penetration Testing

Author (1):

Paulino Calderon

View More author details

Table of Contents (25) Chapters

Title Page

Credits

About the Author

Acknowledgments

About the Reviewer

www.PacktPub.com

Customer Feedback

Preface

1. Nmap Fundamentals FREE CHAPTER

2. Network Exploration

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

Brute modes

14. NSE Debugging

15. Additional Output Options

16. Introduction to Lua

17. References and Additional Reading

Retrieving the capabilities of a POP3 server

POP3 mail servers may support different capabilities defined in RFC 2449. Using a pop3 command, we can list them, and thanks to Nmap, we can automate this task and include this service information in our scan results.

This recipe will teach you how to list the capabilities of a POP3 mail server with Nmap.

How to do it...

Open your favorite terminal and enter the following Nmap command:

$ nmap -p110 --script pop3-capabilities <target>

A list of server capabilities will be included in the script output section:

   PORT    STATE SERVICE  
   110/tcp open  pop3 
   |_pop3-capabilities: USER CAPAUIDL TOP OK(K) RESP-CODES PIPELINING    
   STLSSASL(PLAIN LOGIN)

How it works...

The pop3-capabilities script was submitted by Philip Pickering, and it attempts to retrieve the capabilities of POP3 and POP3S servers. It uses the POP3 command, CAPA, to ask the server for a list of supported commands. This script also attempts to retrieve the version string...

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Authors (1)

Paulino Calderon

Paulino Calderon

Paulino Calderon (@calderpwn on Twitter) is the cofounder of Websec, a company offering information security consulting services based in Mexico and Canada. When he is not traveling to a security conference or conducting on-site consulting for Fortune 500 companies, he spends peaceful days in Cozumel, a beautiful small island in the Caribbean, learning new technologies, conducting big data experiments, developing new tools, and finding bugs in software. Paulino is active in the open source community, and his contributions are used by millions of people in the information security industry. In 2011, Paulino joined the Nmap team during the Google Summer of Code to work on the project as an NSE developer. He focused on improving the web scanning capabilities of Nmap, and he has kept contributing to the project since then. In addition, he has been a mentor for students who focused on vulnerability detection during the Google Summer of Code 2015 and 2017. He has published Nmap 6: Network Exploration and Security Auditing Cookbook and Mastering the Nmap Scripting Engine, which cover practical tasks with Nmap and NSE development in depth. He loves attending information security conferences, and he has given talks and participated in workshops in dozens of events in Canada, the United States, Mexico, Colombia, Peru, Bolivia, and Curacao.

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