What This Document Is
This document is a lab exercise focused on the critical security concept of authorization within a computer systems context. Specifically, it delves into how systems determine *whether* a verified user (having already been authenticated) is permitted to access specific resources. It explores the foundational principles of access control, drawing parallels between government security classifications and computer system permissions. The material centers around practical exploration using a Linux environment, though concepts are also related to Windows systems. It’s designed to be a hands-on learning experience, requiring interaction with a designated system.
Why This Document Matters
This lab is essential for students in security systems courses who need a practical understanding of authorization mechanisms. It’s particularly valuable when you’re learning about operating system security, access control lists, and user management. If you’re preparing for roles in system administration, cybersecurity, or software development where security is paramount, grasping these concepts is crucial. This resource will help solidify theoretical knowledge by applying it to a real-world scenario, preparing you to design and implement secure systems. It’s best used *during* a lab session, alongside direct access to the specified computing environment.
Common Limitations or Challenges
This resource focuses on the *how* of authorization, specifically within a Linux environment. It does not provide a comprehensive overview of all possible authorization models or advanced security protocols. It assumes a basic understanding of authentication principles and command-line interfaces. The lab relies on access to a specific computing environment (DETER accounts) which are set up separately and are a prerequisite for completing the exercise. This material does not cover the intricacies of network authorization or application-level access control.
What This Document Provides
* An overview of the relationship between authentication and authorization.
* Discussion of administrative, technical, and physical aspects of access control.
* Explanation of how user accounts and groups are managed in a Linux system.
* Details on key Linux files related to user and group information (/etc/passwd, /etc/shadow, /etc/group).
* Guidance on adding and deleting user accounts using command-line tools.
* A framework for understanding how access decisions are made based on user identity and resource permissions.
