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

Using ping and DNS

To gather even more information about our target website, we're going to use some common tools – ping and a DNS tool called nslookup.

First, open a command prompt (on a machine with internet connectivity). Start with a simple ping of the website we're trying to target. In this case, we're using www.hackthissite.org. Notice that it first resolves the IP address as 198.148.81.137. Then, we can see the typical ping results – the round-trip time that it took to hit that box and come back:

Figure 2.14 – Using ping

Now, we can start playing around with this by increasing the size of the packet that's going across. Right now, it's just 32 bytes. This will allow us to determine which routers allow for bigger packet sizes, which will be helpful when we start to attack the target. Change the original ping command so that it reads ping hackthissite.org -f -l 1300:

Figure 2.15 – Reading ping hackthissite.org -f -l 1300

Figure 2...