TAILIEUCHUNG - Cryptography and Network Security: Overview

Usually, the primary prerequisite for implementing network security, and the driver for the security design process, is the security policy. A security policy is a formal statement, supported by a company’s highest levels of management, regarding the rules by which employees who have access to any corporate resource abide. The security policy should address two main issues: the security requirements as driven by the business needs of the organization, and the implementation guidelines regarding the available technology. In addressing these issues, the security policy typically includes several elements. For example, the security policy usually includes an authentication policy that defines the levels of passwords. | Cryptography and Network Security Overview Raj Jain Washington University in Saint Louis Saint Louis MO 63130 Jain@ Audio Video recordings of this lecture are available at http jain cse571-11 Washington University in St. Louis CSE571S 2011 Raj Jain 1-1 1. Computer Security Concepts 2. OSI Security Architecture 3. Security Attacks 4. Security Services 5. Security Mechanisms These slides are based on Lawrie Brown s slides supplied with William Stalling s book Cryptography and Network Security Principles and Practice 5th Ed 2011. Washington University in St. Louis CSE571S 2011 Raj Jain 1-2 Standards Organizations National Institute of Standards Technology NIST http Internet Society ISOC Internet Engineering Task Force IETF Internet Architecture Board IAB International Telecommunication Union Telecommunication Standardization Sector ITU-T http International Organization for Standardization ISO http Washington University in St. Louis CSE571S 2011 Raj Jain .

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