PPT-Operating Systems Security

1 The Boot Sequence The action of loading an operating system into memory from a powered off state is known as booting or bootstrapping When a computer is turned on it first executes code stored in a firmware component . 1. 7. Physical Memory. 7.1 Preparing a Program for Execution . Program Transformations . Logical-to-Physical Address Binding. 7.2 Memory Partitioning Schemes. Fixed Partitions . Variable Partitions. 1. 10. File Systems. 10.1 Basic Functions of File Management. 10.2 Hierarchical Model of a File System . 10.3 User’s View of Files. Logical File Organization. Operations on Files. 10.4 . File Directories. 1. 4. The OS Kernel. 4.1 Kernel Definitions and Objects. 4.2 Queue Structures. 4.3 Threads. 4.4 Implementing Processes and Threads. Process and Thread Descriptors. Implementing the Operations. 4.5 Implementing Synchronization and Communication Mechanisms. Cryptography, Authentication, . and Protecting OS Resources. CS. . 111. On-Line MS Program. Operating . Systems . Peter Reiher. . Outline. Basic concepts in computer security. Design principles for security. Sig Freund. CSC 8320 Fall . 2008. rfreund1@student.gsu.edu. Transparency in Distributed Operating Systems. Evolution of Modern Operating Systems. Centralized operating system. +network access and resource sharing. Seventh Edition. Chapter 1. Introducing Operating Systems. Understanding Operating Systems, 7e. What . I. s. an Operating System?. Computer system. Software (programs). Hardware (tangible machine/electronic components). Eighth Edition. By William Stallings. Operating Systems:. Internals and Design Principles. System Access Threats. Intruders . Malicious Software. Programs that exploit vulnerabilities in computing systems. Dr . Damitha. . Karunaratna. . University of Colombo school of computing. Topics to discuss. What is an operating system(OS)?. Main objectives of an OS. Main functions of an OS. Evolution of OS.. and File Management. Chapter 4: Operating Systems and File Management. 2. Chapter Contents. Section A: Operating System Basics. Section B: Today’s Operating Systems. Section C: File Basics. Section D: File Management. Chapter 8. File Management. Understanding Operating Systems,7e. Learning Objectives. After completing this chapter, you should be able to describe:. The fundamentals of file management . File-naming conventions, including the role of extensions. Page 121-131. It’s a Windows World. Chapter 6: Alternative Operating Systems. 2. Page 121. What is the OS sitting on our desks?. Windows > 90%. It’s a Windows World. Chapter 6: Alternative Operating Systems. Introduction. Content from. Operating Systems in Depth Thomas w. . Doeppner. ©2011. Operating Systems Principles & Practices by Anderson and . Dahlin. . 2014. Tannenbaum 2015. Stallings 2015. Keywords. System . Software, Operating . System (. OS), Virtual Machine, Utility Programs, Device Drivers, . Multitasking, Time Slice, Processor . Management, User Interface, Graphical . User . Interface, Command . Chapter Contents. Section A: Operating System Basics. Section B: Today’s Operating Systems. Section C: File Basics. Section D: File Management. Section E: Backup Security. Chapter 4: Operating Systems and File Management.