Book Image

Certified Ethical Hacker (CEH) v12 312-50 Exam Guide

By : Dale Meredith
Book Image

Certified Ethical Hacker (CEH) v12 312-50 Exam Guide

By: Dale Meredith

Overview of this book

With cyber threats continually evolving, understanding the trends and using the tools deployed by attackers to determine vulnerabilities in your system can help secure your applications, networks, and devices. To outmatch attacks, developing an attacker's mindset is a necessary skill, which you can hone with the help of this cybersecurity book. This study guide takes a step-by-step approach to helping you cover all the exam objectives using plenty of examples and hands-on activities. You'll start by gaining insights into the different elements of InfoSec and a thorough understanding of ethical hacking terms and concepts. You'll then learn about various vectors, including network-based vectors, software-based vectors, mobile devices, wireless networks, and IoT devices. The book also explores attacks on emerging technologies such as the cloud, IoT, web apps, and servers and examines prominent tools and techniques used by hackers. Finally, you'll be ready to take mock tests, which will help you test your understanding of all the topics covered in the book. By the end of this book, you'll have obtained the information necessary to take the 312-50 exam and become a CEH v11 certified ethical hacker.
Table of Contents (23 chapters)
1
Section 1: Where Every Hacker Starts
10
Section 2: A Plethora of Attack Vectors
15
Section 3: Cloud, Apps, and IoT Attacks
20
Chapter 17: CEH Exam Practice Questions

DNS poisoning

DNS poisoning is one of my favorite subjects, just in the aspect of how effective it can be. You have nothing to fear… but an attacker with your DNS cache. DNS is simply there because humans are ill-advised and, in some cases, ill-equipped. It's hard for humans to remember a number. Can you imagine if you had to remember the IP address of a website instead of simply typing in a name? We associate and remember names better than we do numbers.

We're all familiar with the Uniform Resource Locator (URL) box where we type in the name of a website we'd like to go to. DNS oversees taking the name and converting it down to an IP address using tables. These tables can be distributed across multiple systems. Some of them are internal, while others are external names.

A DNS server typically hosts these databases. If the DNS server oversees looking at internal names and names of servers in your environment, that would be your internal DNS name server...