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
About the Author
Assessment Test
Answers to Assessment Test
Comprehensive Online Learning Environment
End User License Agreement

Communications Models

We access systems through their addresses. The problem is that each system will have multiple addresses. These addresses are best separated into buckets related to the functionality provided by the protocol each address belongs to. The first communications model, from the standpoint of what we’ll be talking about but also from the standpoint of history, meaning it essentially came first, is more conceptual than strictly practical. I will follow up with a practical model.

These communications models are broken into layers, and the layers are stacked on top of one another. Because it shows up as a stack of tiers, you will often hear them referred to as network stacks or protocol stacks. One important aspect to consider when it comes to these network stacks is that the layers are all separate and the functionality is distinct. When two systems are talking, each has these notional layers, and layer C on the first system can only talk to layer C, not layers B...