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CCNA Security 210-260 Certification Guide

You're reading from  CCNA Security 210-260 Certification Guide

Product type Book
Published in Jun 2018
Publisher Packt
ISBN-13 9781787128873
Pages 518 pages
Edition 1st Edition
Languages
Authors (3):
Glen D. Singh Glen D. Singh
Profile icon Glen D. Singh
Michael Vinod Michael Vinod
Profile icon Michael Vinod
Vijay Anandh Vijay Anandh
Profile icon Vijay Anandh
View More author details
Toc

Table of Contents (19) Chapters close

Preface 1. Exploring Security Threats 2. Delving into Security Toolkits 3. Understanding Security Policies 4. Deep Diving into Cryptography 5. Implementing the AAA Framework 6. Securing the Control and Management Planes 7. Protecting Layer 2 Protocols 8. Protecting the Switch Infrastructure 9. Exploring Firewall Technologies 10. Cisco ASA 11. Advanced ASA Configuration 12. Configuring Zone-Based Firewalls 13. IPSec – The Protocol that Drives VPN 14. Configuring a Site-to-Site VPN 15. Configuring a Remote-Access VPN 16. Working with IPS 17. Application and Endpoint Security 18. Other Books You May Enjoy

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...
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