CCNA Security Official Exam Certification Guide (Exam 640-553)

Chapter 1. Understanding Network Security Principles

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This chapter covers the following topics:

• Exploring security fundamentals: This section explains the need for network security and discusses the elements of a secure network. Additionally, legal and ethical considerations are discussed.

• Understanding the methods of network attacks: This section makes you aware of various threats targeting the security of your network and describes specific attacks that could be launched against a network.

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As networks grow and interconnect with other networks, including the Internet, those networks are exposed to a greater number of security risks. Not only does the number of potential attackers grow along with the size of the ...