Book Image

CCNA Security 210-260 Certification Guide

By : Glen D. Singh, Michael Vinod, Vijay Anandh
Book Image

CCNA Security 210-260 Certification Guide

By: Glen D. Singh, Michael Vinod, Vijay Anandh

Overview of this book

With CCNA Security certification, a network professional can demonstrate the skills required to develop security infrastructure, recognize threats and vulnerabilities to networks, and mitigate security threats. The CCNA Security 210-260 Certification Guide will help you grasp the fundamentals of network security and prepare you for the Cisco CCNA Security Certification exam. You’ll begin by getting a grip on the fundamentals of network security and exploring the different tools available. Then, you’ll see how to securely manage your network devices by implementing the AAA framework and configuring different management plane protocols. Next, you’ll learn about security on the data link layer by implementing various security toolkits. You’ll be introduced to various firewall technologies and will understand how to configure a zone-based firewall on a Cisco IOS device. You’ll configure a site-to-site VPN on a Cisco device and get familiar with different types of VPNs and configurations. Finally, you’ll delve into the concepts of IPS and endpoint security to secure your organization’s network infrastructure. By the end of this book, you’ll be ready to take the CCNA Security Exam (210-260).
Table of Contents (19 chapters)

What is IPSec?

IPSec is a framework or suite of protocols combined to ensure secure data communication across an IP network. IPSec combines different protocols to provide data confidentiality (encryption), data integrity (hashing), authentication (PSK and RSA digital certificates), and key exchange (Diffie-Hellman) between devices over an untrusted network:

Within the IPSec framework, there are two protocols that assist with the transportation of IP packets across the IPSec VPN tunnel, these are known as Authentication Header (AH) and Encapsulation Security Payloads (ESPs).

When creating an IPSec VPN tunnel, either the AH or the ESP can be used as a standalone protocol. However, both AH and ESP can be used together.

Authentication Header

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