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

Simple Mail Transfer Protocol

Like so many other protocols, SMTP operates using a series of verbs to interact with the server. The client sends a verb and any other necessary parameters to the SMTP server. Based on the verb, the server knows how to handle the parameters received. Unlike other, simpler protocols, though, communicating with SMTP is an entire conversation. Before you start, you have to greet the server. This tells the server what flavor of SMTP you are going to be speaking. You then tell the server what you want to do. Based on the function you are trying to perform, you may have to provide additional information. This may include providing credentials. You can see an example of a simple SMTP conversation next. This is entirely manual, so you can see the conversation at the protocol level and how you might interact with an SMTP server.

SMTP Conversation

root@quiche:~# nc 25
220 bobbie.lan ESMTP Postfix (Ubuntu)