Network Enumeration with Nmap

Network Enumeration with Nmap  Easy

Nmap is one of the most used networking mapping and discovery tools because of its accurate results and efficiency. The tool is widely used by both offensive and defensive security practitioners. This module covers fundamentals that will be needed to use the Nmap tool for performing effective network enumeration.

Created by Valentin Dobrykov

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Summary

Nmap is used to identify and scan systems on the network. It is an important part of network diagnostics and evaluation of network-connected systems. In this module, we will learn the basics of this tool and how it can be used efficiently to map out the internal network by identifying live hosts and performing port scanning, service enumeration, and operating system detection.

In this module, we will cover:

  • An overview of Nmap
  • Host discovery and port scanning
  • Saving scan results
  • Service enumeration
  • Using the powerful Nmap scripting language
  • Firewall and IDS/IPS evasion

This module is broken down into sections with accompanying hands-on exercises to practice each of the tactics and techniques we cover. The module ends with three hands-on labs of increasing difficulty to gauge your understanding of the various topic areas.

As you work through the module, you will see example commands and command output for the various topics introduced. It is worth reproducing as many of these examples as possible to reinforce further the concepts introduced in each section. You can do this in the Pwnbox provided in the interactive sections or your own virtual machine.

You can start and stop the module at any time and pick up where you left off. There is no time limit or "grading," but you must complete all of the exercises and the labs to receive the maximum number of cubes and have this module marked as complete in any paths you have chosen.

The module is classified as "Easy" but assumes a working knowledge of the Linux command line and an understanding of information security fundamentals.

A firm grasp of the following modules can be considered prerequisites for successful completion of this module:

  • Networking Fundamentals
  • Linux Fundamentals

Sections

  • Enumeration
  • Introduction to Nmap
  • Host Discovery
  • Host and Port Scanning
  • Saving the Results
  • Service Enumeration
  • Nmap Scripting Engine
  • Performance
  • Firewall and IDS/IPS Evasion
  • Firewall and IDS/IPS Evasion - Easy Lab
  • Firewall and IDS/IPS Evasion - Medium Lab
  • Firewall and IDS/IPS Evasion - Hard Lab

Relevant Paths

This module progresses you towards the following Paths

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Basic Toolset

Medium 50 Sections

Cubes Required: 260

In this path, modules cover the basic tools needed to be successful in network and web application penetration testing. This is not an exhaustive listing of all tools (both open source and commercial) available to us as security practitioners but covers tried and true tools that we find ourselves using on every technical assessment that we perform. Learning how to use the basic toolset is essential, as many different tools are used in penetration testing. We need to understand which of them to use for the various situations we will come across.

 Network Enumeration with Nmap

Easy 12 Sections

Nmap is one of the most used networking mapping and discovery tools because of its accurate results and efficiency. The tool is widely used by both offensive and defensive security practitioners. This module covers fundamentals that will be needed to use the Nmap tool for performing effective network enumeration.

 Login Brute Forcing

Easy 11 Sections

Learn how to brute force logins for various types of services and create custom wordlists based on your target.

 Attacking Web Applications with Ffuf

Easy 13 Sections

This module covers the fundamental enumeration skills of web fuzzing and directory brute, forcing using the Ffuf tool. The techniques learned in this module will help us in locating hidden pages, directories, and parameters when targeting web applications.

 Cracking Passwords with Hashcat

Medium 14 Sections

This module covers the fundamentals of password cracking using the Hashcat tool.

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