Book Image

CEH v10 Certified Ethical Hacker Study Guide

By : Ric Messier
Book Image

CEH v10 Certified Ethical Hacker Study Guide

By: Ric Messier

Overview of this book

As protecting information becomes a rapidly growing concern for today’s businesses, certifications in IT security have become highly desirable, even as the number of certifications has grown. Now you can set yourself apart with the Certified Ethical Hacker (CEH v10) certification. The CEH v10 Certified Ethical Hacker Study Guide offers a comprehensive overview of the CEH certification requirements using concise and easy-to-follow instructions. Chapters are organized by exam objective, with a handy section that maps each objective to its corresponding chapter, so you can keep a track of your progress. The text provides thorough coverage of all topics, along with challenging chapter review questions and Exam Essentials, a key feature that identifies critical study areas. Subjects include intrusion detection, DDoS attacks, buffer overflows, virus creation, and more. This study guide goes beyond test prep, providing practical hands-on exercises to reinforce vital skills and real-world scenarios that put what you’ve learned into the context of actual job roles. By the end of the book, you’ll have all the information and knowledge you need to pass this test with flying colors
Table of Contents (23 chapters)
Free Chapter
1
Cover
2
About the Author
3
Introduction
4
Assessment Test
5
Answers to Assessment Test
20
Index
21
Comprehensive Online Learning Environment
22
End User License Agreement

Port Scanning

Let’s clear this up, in case there is confusion. We aren’t talking about passing by a cruise ship, peering in windows. We are talking about network communication devices. A port is a construct within the operating system’s network stack. When an application has network service functionality, it binds to a port, meaning it reserves the port and registers the application to get messages that come in on that port. Any communication received by the system addressed to one of the ports gets forwarded to the application that is registered to that port. When there is an application listening on a port, it is considered to be open. Remember that ports exist at the Transport layer, so applications determine whether they are going to use UDP or TCP as the protocol to listen on. The reason for mentioning this is that the objective of port scanning is to identify the software that is bound to the ports that are identified as open.

TCP, as you should know, uses...