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Table Of Contents

NMAP Essentials

By : Shaw

4 (1)

NMAP Essentials

4 (1)

By: Shaw

Overview of this book

This book is for beginners who wish to start using Nmap, who have experience as a system administrator or of network engineering, and who wish to get started with Nmap.

Preface

Preface

What this book covers

What you need for this book

Who this book is for

Conventions

Reader feedback

Customer support

Free Chapter

1. Introduction to Nmap

1. Introduction to Nmap

Nmap's humble beginnings

The many uses of Nmap

Installing Nmap

Building Nmap from source

Summary

2. Network Fundamentals

2. Network Fundamentals

The structure of the Internet

The OSI model

Port scanning

TCP and UDP

Service banners

Summary

3. Nmap Basics

3. Nmap Basics

How to choose a target

Running a default scan

Service version scans

Logging scans

Specified scan ranges

Understanding the reason flag

Summary

4. Advanced Nmap Scans

4. Advanced Nmap Scans

Host detection methods

Running a ping agnostic scan

Scanning UDP services

Special TCP scans

Operating system detection

Increasing verbosity in scans

Packet tracing

Summary

5. Performance Optimization

5. Performance Optimization

Nmap timing optimization

Customized host group sizes

Increasing and decreasing parallelism

Dealing with stuck hosts

Delaying and increasing probe rates

Summary

6. Introduction to the Nmap Scripting Engine

6. Introduction to the Nmap Scripting Engine

The history of the NSE

The inner working of the NSE

Finding Nmap scripts

Running Nmap scripts

Summary

7. Writing Nmap Scripts

7. Writing Nmap Scripts

Anatomy of an Nmap script

Defining an Nmap script – script headers

Triggering functions – the rule

Defining a script's action

Summary

8. Additional Nmap Tools

8. Additional Nmap Tools

Attacking services with Ncrack

Host detection with Nping

File transfers and backdoors with Ncat

Comparing Nmap results with Ndiff

Summary

9. Vulnerability Assessments and Tools

9. Vulnerability Assessments and Tools

Conducting vulnerability scans with Nessus

Assessing web server issues with Nikto

Identifying sensitive web directories with DirBuster

Getting started with intercepting proxies

Summary

10. Penetration Testing with Metasploit

10. Penetration Testing with Metasploit

Installing Metasploit

Scanning with Metasploit

Attacking services with Metasploit

What to learn next

Summary

Index

Index

Chapter 6. Introduction to the Nmap Scripting Engine

Although being able to conduct port scans is an integral part of using the Nmap suite of tools, the developers of Nmap created a very powerful engine that's built into the tool: the Nmap Scripting Engine (NSE). This chapter introduces the NSE, and covers all the topics needed to use reliably-written scripts in the Nmap script repository, in order to conduct reconnaissance scans that include much more than just what ports are open and which services are listening.

In this chapter, we will cover:

The history of the NSE
How the NSE works
How to find existing scripts to use
How to run scripts using the NSE

CONTINUE READING

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Tech Concepts

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Programming languages

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