Wireless Network Security, 2nd Edition

2

Network Security

2.1 Introduction

In economic life, industrial production, services, and other social relationships networks have become common structural elements. They have witnessed growth and have become an integral part of our lives, but there has been parallel growth in new kinds of risks and dangers associated with them. These risks may comprise hacking of web pages, applications being used by administrators or client data records from financial systems.

There is no such thing as absolute network security, only until one cuts off any external connections and prohibits all users. Once an organisation opts for internal and external networks—and usually there is no way around this—the need for risk assessment arises. This results in ...