Role-Based Access Control
Role-Based Access Control (RBAC) is a method of managing access to resources based on the roles assigned to individual users within an organization. RBAC allows administrators to grant permissions to roles, and then users can be assigned these roles, inheriting all associated permissions. This approach streamlines the process of managing access rights, as it centralizes permissions and reduces the overhead of maintaining multiple sets of permissions for each user. RBAC simplifies access management by promoting the principle of least privilege, where users are granted only the necessary access to perform their duties and no more. As a result, the risk of unauthorized access or manipulation of sensitive data is minimized.
Complete Guide on Role-Based Access Control (RBAC)
What is Role-Based Access Control?
Role-Based Access Control (RBAC) is a method of restricting system access to authorized users. It is a policy-neutral access control mechanism defined around roles and privileges.
Why is it important?
RBAC is important as it improves security and efficiency, and helps in meeting regulatory compliance requirements by restricting the access to valuable data and resources to authorized employees only.
How it works?
In RBAC, roles are created for various job functions, and permissions to access systems or perform certain operations are assigned to specific roles. Users are then assigned appropriate roles, and through those roles gain access to the resources.
Exam Tips: Answering Questions on Role-Based Access Control
Understand the Basic Concepts: You should understand the functionality and benefits of RBAC. Remember that in RBAC, users are not given permissions directly, but they receive them through their role in the organization.
Real-World Applications: Be aware of how RBAC is applied in real-world systems, such as limiting access to sensitive information in a healthcare or financial system.
Role Hierarchy: Understand that roles can be given a hierarchy, allowing users to gain access to roles lower in the hierarchy.
Separation of Administrative Functionality: Know that RBAC mandates a separation of administrative responsibilities to restrict unauthorised access and maintain security of the system.
Always link the concept of RBAC to the idea of 'least privilege', which means giving a user only those privileges which are essential to perform his/her job functions.
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