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

Distributing a scan among several clients using dnmap

dnmap is an excellent project for distributing Nmap scans among different clients. The extra resources available (CPU and bandwidth) allow us to scan more targets faster when time is a limiting factor. The main advantage of using dnmap is having the Nmap Scripting Engine available for customized tasks against the target hosts.

This recipe will show you how to perform distributed port scanning with dnmap.

Getting ready

Download the latest version of dnmap from the official SourceForge repositories at https://sourceforge.net/projects/dnmap/files/.

dnmap depends on Python's twisted library. If you are on a Debian-based system, you can install it with the following command:

# apt-get install libssl-dev python-twisted

It is also worth mentioning that Nmap is not self-contained in dnmap; we must install it separately on each client. Please refer to the Compiling Nmap from source code recipe in Chapter 1, Nmap Fundamentals...