Chapter 8 Policy-Based Security Management

Security is a wide area, covering several aspects related to the operation of computer systems and networks. It deals with three basic aspects of computer systems operations: confidentiality, integrity, and availability.

Confidentiality is the requirement that a piece of information stored on a computer system, or a flow of information among computers on the network, be available only to users authorized to access that information or the flow. To preserve the confidentiality of information, computer systems and networks need to provide mechanisms for access control, authenticating the identity of entities accessing the network, and mechanisms for encrypting any information stored on computers or being ...

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