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)

Internet Key Exchange

The IPSec protocol suite uses Internet Key Exchange (IKE) to securely handle the security associations in the creation of an IPSec VPN. Before the IPSec VPN is established, IKE needs to establish an IKE phase 1 tunnel and an IKE phase 2 tunnel.

IKE phase 1

The IKE phase 1 is used to authenticate the IPSec VPN peers and established a secure, encrypted tunnel to further allow the peers to exchange IKE information.

The main characteristics of the IKE phase 1 are as follows:

  • The phase 1 tunnel is used to exchange any packet/traffic originating from one peer that is destined for the other peer. If there's an IKE phase 1 tunnel between two routers, Router A and Router B, if one router wants to send a...