Book Image

Cisco Certified CyberOps Associate 200-201 Certification Guide

By : Glen D. Singh
Book Image

Cisco Certified CyberOps Associate 200-201 Certification Guide

By: Glen D. Singh

Overview of this book

Achieving the Cisco Certified CyberOps Associate 200-201 certification helps you to kickstart your career in cybersecurity operations. This book offers up-to-date coverage of 200-201 exam resources to fully equip you to pass on your first attempt. The book covers the essentials of network security concepts and shows you how to perform security threat monitoring. You'll begin by gaining an in-depth understanding of cryptography and exploring the methodology for performing both host and network-based intrusion analysis. Next, you'll learn about the importance of implementing security management and incident response strategies in an enterprise organization. As you advance, you'll see why implementing defenses is necessary by taking an in-depth approach, and then perform security monitoring and packet analysis on a network. You'll also discover the need for computer forensics and get to grips with the components used to identify network intrusions. Finally, the book will not only help you to learn the theory but also enable you to gain much-needed practical experience for the cybersecurity industry. By the end of this Cisco cybersecurity book, you'll have covered everything you need to pass the Cisco Certified CyberOps Associate 200-201 certification exam, and have a handy, on-the-job desktop reference guide.
Table of Contents (25 chapters)
1
Section 1: Network and Security Concepts
5
Section 2: Principles of Security Monitoring
9
Section 3: Host and Network-Based Analysis
14
Section 4: Security Policies and Procedures
21
Chapter 17: Mock Exam 1
22
Chapter 18: Mock Exam 2

Understanding cryptanalysis

As mentioned earlier in this chapter, threat actors such as hackers use cryptanalysis to break an encryption cipher and retrieve the plaintext data. While this technique is often associated with the bad guys, such as hackers, many government agencies decipher encrypted data for the purpose of monitoring for any potential threats. Even security appliances such as next-generation firewalls have the ability to decipher an encrypted packet, inspect the contents for any potential malware, and re-package the message before forwarding it to the destination.

The following are various methods that are used during cryptanalysis:

  • Brute force: In the brute-force method, all possible combinations of a key are tried out in the attempt to eventually discover the correct secret key. Since encryption ciphers are mathematical techniques that are used to convert a plaintext message into ciphertext or encrypted data, all ciphers are vulnerable to this type of attack...