CCIE Professional Development Series Network Security Technologies and Solutions

Chapter 1. Overview of Network Security

At the same time networks are growing exponentially, they are becoming complex and mission critical, bringing new challenges to those who run and manage them. The need for integrated network infrastructure comprising voice, video, and data (all-in-one) services is evident, but these rapidly growing technologies introduce fresh security concerns. Therefore, as network managers struggle to include the latest technology in their network infrastructure, network security has become a pivotal function in building and maintaining today’s modern high-growth networks.

This chapter presents a broad description of network security in the context of today’s rapidly changing network environments. The security paradigm ...