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

Checking for live systems and their ports

Scanning for live systems can be very loud or noisy on the network, but if you can do it strategically, the target might never see we're going through their network looking for targets.

Now, let's look at different ways to check for live systems.

ICMP sweep/ping sweep

This is the most common way to check for live systems. Like a sonar ping in a submarine, we ping and hope we get a return, which tells us how far away the target is or where the target is located. A standard ping uses the ICMP protocol, which is not only well known but also very noisy on the network – so much so that most IT professionals will block ICMP traffic as a deterrent.

Port scanning

Just because a machine does not respond to a ping sweep or an ICMP sweep doesn't mean it's not there. So, we can perform port scans in various ways and specify IP addresses. We can still try to check if it responds. We'll show you how to do...