COMP 242 Class Notes

Section 8: Protection

• Protection
  • A Model of Access Control
  • Capability Lists
  • Access Lists
  • Inheritance
  • Negative Rights
  • Directories and Access Control
  • Aliases and Indirect Files
  • The Access Matrix Again
  • Modes
  • Multics Rings
  • PC Rings
  • Unix SETUID
  • Bell LaPadula Model
  • Capability-Based Systems
    • Physical Analogy
  • Access Control for Distributed Systems
    • Form of Access Matrix
    • Implementation of Access Matrix
  • The Confinement Problem
  • Cryptography
  • User-Authentication
    • Passwords
    • Improvements
    • Other Methods
  • Computer Authentication
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