TAILIEUCHUNG - SecurityIntroduction

Security Service – a service provided by a protocol layer of communicating open systems, which ensures adequate security of the systems or of data transfers RFC 2828 – a processing or communication service that is provided by a system to give a specific kind of protection to system resources; security services implement security policies and are implemented bt security mechanisms. | Introduction CS-480b Dick Steflik – OSI Security Services Security Service – a service provided by a protocol layer of communicating open systems, which ensures adequate security of the systems or of data transfers RFC 2828 – a processing or communication service that is provided by a system to give a specific kind of protection to system resources; security services implement security policies and are implemented bt security mechanisms. Security Services Authentication – assurance that the communicating entity is who they say they are Access Control – prevent the unauthorized access to some system resource Who can access Under what conditions What they are allowed to do Data Confidentiality – protection of data from unauthorized disclosure Data Integrity – insure that data received is exactely what was sent Nonrepudiation – protection from denial by one of the entities involved in a communication of having participated in all or part of the communication Authentication Peer .

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