Key Terms
Table 1-2 lists the most important terms used in this chapter.
Table 1-2 Chapter Key Terms
Term Definition
Network security The implementation of security devices, policies, and processes to prevent the
unauthorized access to network resources or the alteration or destruction of
resources or data.
Security policy A formal statement that specifies a set of rules that users must follow while
gaining access to corporate network access.
Defense in depth A network architecture that provides multiple layers of protection.
AVVID Cisco Architecture for Voice, Video, and Integrated Data.
SAFE The Cisco Secure Architecture for Enterprises.