Network Defense and Countermeasures: Principles and Practices, 4th Edition

Chapter 7

Virtual Private Networks

Chapter Objectives

After reading this chapter and completing the exercises, you will be able to do the following:

• Use a virtual private network (VPN).

• Use Point-to-Point Tunneling Protocol (PPTP) as an encryption tool for VPNs.

• Use Layer 2 Tunneling Protocol (L2TP) as an encryption tool for VPNs.

• Add security and privacy to a communication using IPsec.

• Understand and evaluate VPN solutions.

Introduction

Earlier chapters focus primarily on security within a network. However, what happens when remote users want to log on to a network versus a remote user simply accessing a web server or FTP server on the network? This process involves a remote user, perhaps an entire remote office, connecting to the network ...