Book Image

Nmap Network Exploration and Security Auditing Cookbook, Third Edition - Third Edition

By : Paulino Calderon
Book Image

Nmap Network Exploration and Security Auditing Cookbook, Third Edition - Third Edition

By: Paulino Calderon

Overview of this book

Nmap is one of the most powerful tools for network discovery and security auditing used by millions of IT professionals, from system administrators to cybersecurity specialists. This third edition of the Nmap: Network Exploration and Security Auditing Cookbook introduces Nmap and its family - Ncat, Ncrack, Ndiff, Zenmap, and the Nmap Scripting Engine (NSE) - and guides you through numerous tasks that are relevant to security engineers in today’s technology ecosystems. The book discusses some of the most common and useful tasks for scanning hosts, networks, applications, mainframes, Unix and Windows environments, and ICS/SCADA systems. Advanced Nmap users can benefit from this book by exploring the hidden functionalities within Nmap and its scripts as well as advanced workflows and configurations to fine-tune their scans. Seasoned users will find new applications and third-party tools that can help them manage scans and even start developing their own NSE scripts. Practical examples featured in a cookbook format make this book perfect for quickly remembering Nmap options, scripts and arguments, and more. By the end of this Nmap book, you will be able to successfully scan numerous hosts, exploit vulnerable areas, and gather valuable information.
Table of Contents (22 chapters)
Appendix A: HTTP, HTTP Pipelining, and Web Crawling Configuration Options
Appendix Β: Brute-Force Password Auditing Options
Appendix F: References and Additional Reading

Getting your scripts ready for submission

Hopefully, after going through this chapter, you have learned how to write your very own scripts and now you are ready to share them with the world. Before a submission gets incorporated into the main source code trunk, it must pass certain quality control checks. All committed code must adhere to the project's code standards and must be tested thoroughly.

This recipe will go over the process of preparing your NSE script for submission.

How to do it...

  1. First, visit https://secwiki.org/w/Nmap/Code_Standards and make sure that you read the whole document. It describes the code standards guidelines followed by the organization. For Lua and NSE scripts, the rules are simple:

    –Use NSEDoc tags to document the script.

    –Indent with two spaces, not tabs.

    –Functions and variables must be local.

    –Scripts should support structured output.

    –Always use explicit endianness in format strings.

  2. Once your script...