CompTIA Network All-in-One Exam Guide, Fourth Edition, 4th Edition

CHAPTER 17Protecting Your Network

The CompTIA Network+ certification exam expects you to know how to

• 4.5 Explain different methods and rationales for network performance optimization, such as fault tolerance

• 6.1 Explain the function of hardware and software security devices

• 6.2 Explain common features of a firewall

• 6.5 Explain issues that affect device security

• 6.6 Identify common security threats and mitigation techniques

To achieve these goals, you must be able to

• Discuss the common security threats in network computing

• Describe methods for securing user accounts

• Explain how firewalls, NAT, port filtering, and packet filtering protect a network from threats

The very nature of networking makes networks vulnerable to a dizzying ...