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ZOZOTOWN
The document discusses the OSI security architecture and common network security threats and defenses. It begins with an introduction to the OSI security architecture proposed by ITU-T as a standard for defining and providing security across network layers. It then discusses (1) specific security mechanisms like encryption and digital signatures and pervasive mechanisms like security audits; (2) common passive and active security threats like eavesdropping and denial of service attacks; and (3) that passive attacks focus on prevention while active attacks require detection and recovery. It concludes with exercises asking about these topics.
