Network Security

Network Security

Abstract:

Network security is a complicated subject, historically only tackled by well-trained and experienced experts. However, as more and more people become ``wired'', an increasing number of people need to understand the basics of security in a networked world. This document explains the concepts needed to read through the hype in the marketplace and understand risks and how to deal with them. Some history of networking is included, as well as an introduction to TCP/IP and internetworking . We go on to consider risk management, network threats, firewalls, and more special-purpose precautions against networking threats. This is not intended to be a ``frequently asked questions'' reference, nor is it a ``hands-on'' document describing how to accomplish specific functionality. It is hoped that the reader will have a wider perspective on security in general, and better understand how to reduce and manage risk personally, at home, and in the workplace. These days, computer security is a serious and complex business. True security requires the coordination of staff and technology across the enterprise infrastructure, as well as educated and cooperative users. But even the best of information security policies and plans will fail if the underlying network is not secure. You may think you are doing all you can to protect your network, but think again. Security dangers you're not even aware can be lurking in every corner of your network. This package provides you with an overview of network security, including firewalls, intrusion detection, and and offers practical guidelines you can put into place today to protect your company's infrastructure and critical data in the future.


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