Business Data Communications and Networking, 13th Edition

PART FOUR NETWORK MANAGEMENT

CHAPTER 11NETWORK SECURITY

This chapter describes why networks need security and how to provide it. The first step in any security plan is risk assessment, understanding the key assets that need protection, and assessing the risks to each. A variety of steps can be taken to prevent, detect, and correct security problems due to disruptions, destruction, disaster, and unauthorized access.

OBJECTIVES

• Be familiar with the major threats to network security
• Be familiar with how to conduct a risk assessment
• Understand how to ensure business continuity
• Understand how to prevent intrusion

OUTLINE

• 11.1 Introduction
  • 11.1.1 Why Networks Need Security
  • 11.1.2 Types of Security Threats
  • 11.1.3 Network Controls
• 11.2 Risk Assessment
  • 11.2.1 Develop Risk Measurement Criteria
  • 11.2.2 Inventory IT Assets
  • 11.2.3 Identify Threats
  • 11.2.4 Document Existing Controls
  • 11.2.5 Identify Improvements
• 11.3 Ensuring Business Continuity
  • 11.3.1 Virus Protection
  • 11.3.2 Denial-of-Service Protection
  • 11.3.3 Theft Protection
  • 11.3.4 Device Failure Protection
  • 11.3.5 Disaster Protection
• 11.4 Intrusion Prevention
  • 11.4.1 Security Policy
  • 11.4.2 Perimeter Security and Firewalls
  • 11.4.3 Server and Client Protection
  • 11.4.4 Encryption
  • 11.4.5 User Authentication
  • 11.4.6 Preventing Social Engineering
  • 11.4.7 Intrusion Prevention Systems
  • 11.4.8 Intrusion Recovery
• 11.5 Best Practice Recommendations
• 11.6 Implications for Your Cyber Security
• Summary

11.1 INTRODUCTION

Business and government ...