Operating system security

Lecture Operating System: Chapter 09 - Security presented The security environment, Basics of cryptography, User authentication, Attacks from inside the system, Attacks from outside the system, Protection mechanisms, Trusted systems.

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Linux History Design Principles Kernel Modules Process Management Scheduling Memory Management File Systems Input and Output Interprocess Communication Network Structure Security To explore the history of the UNIX operating system from which Linux is derived and the principles which Linux is designed upon To examine the Linux process model and illustrate how Linux schedules processes and provides interprocess communication To look at memory management in Linux To explore how Linux implements file systems and manages I/O devices...

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Windows 2000 32-bit preemptive multitasking operating system for Intel microprocessors Key goals for the system: portability security POSIX compliance multiprocessor support extensibility international support compatibility with MS-DOS and MS-Windows applications Uses a micro-kernel architecture Available in four versions, Professional, Server, Advanced Server, National Server New version – Windows 2003, is now available

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Lecture Operating System: Chapter 11 - Windows 2000 presented History of windows 2000, Programming windows 2000, System structure, Processes and threads in windows 2000, Memory management, Input/output in windows 2000, the windows 2000 file system, Security in windows 2000, Caching in windows 2000.

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(BQ) Part 2 book "Operating system concept" has contents: File system, implementing file systems, secondary storage structure, system protection, system security, distributed operating systems, distributed file systems, distributed synchrozination, real time systems, multimedia systems, the linux system,... and other contents.

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Lecture Operating System: Chapter 10 - Unix and Linux presented History of unix, Overview of unix, Processes in unix, Memory management in unix, Input/output in unix, The unix file system, Security in unix.

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(BQ) Part 2 book "Modern operating systems" has contents: Multiple processor systems, security, case study 1 - linux, case study 2 - windows vista, case study 3 - symbian os, operating system design, reading list and bibliography.

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The Windows 2000 operating system is designed to take advantage of the many advances in processor technology. Although primarily run on the Intel architecture, Windows 2000 was designed to be portable in order to take advantage of whatever promising technologies happened to come along. Key goals for the system included portability, security, POSIX compliance, multiprocessor support, extensibility, international support, and compatibility with MS-DOS and MS-Windows applications.

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(BQ) Part 2 book "Modern operating systems" has contents: Multimedia operating systems, deadlocks, multiple processor systems, security, case study 1 - linux, case study 2 - windows vista, case study 3 - symbian os, operating system design, reading list and bibliography.

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Operating System: Chapter 11 - Case Study 2 - Windows 2000 presents about History of windows 2000, Programming windows 2000, System structure, Processes and threads in windows 2000, Memory management, Input/output in windows 2000, The windows 2000 file system, Security in windows 2000, Caching in windows 2000.

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Objectives in chapter 3: Explain how to harden operating systems, list ways to prevent attacks through a Web browser, define SQL injection and explain how to protect against it, explain how to protect systems from communications-based attacks, describe various software security applications.

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Discovering Computers - Chapter 8: Operating Systems and Utility Programs Identify the types of system software; Summarize the startup process on a personal computer; Describe the functions of an operating system; discuss ways that some operating systems help administrators control a systems help admini etwork and administer security.

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Chapter 15 - Computer security techniques. After studying this chapter, you should be able to: Assess the key security issues that relate to operating systems, understand the design issues for file system security, distinguish among various types of intruder behavior patterns and understand the types of intrusion techniques used to breach computer security, compare and contrast two methods of access control.

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A modem computer consists of one or more processors, some main memory, disks, printers, a keyboard, a mouse, a display, network interfaces, and various other input/output devices. All in all, a complex system. If every application programmer had to understand how all these things work in detail, no code would ever get written. Furthermore, managing all these components and using them optimally is an exceedingly challenging job.

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The Security Problem Program Threats System and Network Threats Cryptography as a Security Tool User Authentication Implementing Security Defenses Firewalling to Protect Systems and Networks Computer-Security Classifications An Example: Windows XP To discuss security threats and attacks To explain the fundamentals of encryption, authentication, and hashing To examine the uses of cryptography in computing To describe the various countermeasures to security attacks

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Security-Enhanced Linux (SELinux) is an implementation of mandatory access control using Linux Security Modules (LSM) in the Linux kernel, based on the principle of least privilege. It is not a Linux distribution, but rather a set of modifications that can be applied to Unix-like operating systems, such as Linux and BSD.

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History Design Principles System Components Environmental Subsystems File system Networking Programmer Interface To explore the principles upon which Windows XP is designed and the specific components involved in the system To understand how Windows XP can run programs designed for other operating systems To provide a detailed explanation of the Windows XP file system To illustrate the networking protocols supported in Windows XP To cover the interface available to system and application programmers .

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Outline Introduction Android Applications Security Enforcement Security Refinements Lessons in Defining Policy Introduction Next generation open operation system will be developed on small mobile devices. Android (Google) -a widely anticipated open source operating system for mobile devices -it provide base operation system, application middleware layer, Java software development kit and a collection of system applications

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Web now widely used by business, government, individuals but Internet & Web are vulnerable have a variety of threats integrity confidentiality denial of service authentication need added security mechanisms

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WPA: A rush solution to the security problems of WEP WPA2: Based on 802.11i (official version) Encrypt and authenticate MSDUs: counter mode-CBC MAC protocol with AES-128 Authenticate STAs: 802.1X Initialization vectors transmitted in plaintext are no longer needed to generate per-frame keys But most of the existing Wi-Fi WPA cards cannot be upgraded to support 802.11i

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