Dr. Tom Shinder's ISA Server 2006 Migration Guide

Chapter 1. Network Security Basics

Solutions in this chapter:

• Security Overview

• Defining Basic Security Concepts

• Addressing Security Objectives

• Recognizing Network Security Threats

• Designing a Comprehensive Security Plan

Summary

Introduction

Before you can understand firewalls and how ISA Server 2006 works, you need to look at the big picture: what we mean by network security in general – and Internet security in particular – why it’s necessary, how we can create a comprehensive security policy to protect our networks from unauthorized access, and where ISA Server fits into that picture.

Network security is a big topic and is growing into a high profile ...