RBAC stands for Role-Based Access Control. It is a concept for managing and restricting access to resources within an IT system based on the roles of users within an organization. The main principles of RBAC include:

1. Roles: A role is a collection of permissions. Users are assigned one or more roles, and these roles determine which resources and functions users can access.

2. Permissions: These are specific access rights to resources or actions within the system. Permissions are assigned to roles, not directly to individual users.

3. Users: These are the individuals or system entities using the IT system. Users are assigned roles to determine the permissions granted to them.

4. Resources: These are the data, files, applications, or services that are accessed.

RBAC offers several advantages:

• Security: By assigning permissions based on roles, administrators can ensure that users only access the resources they need for their tasks.
• Manageability: Changes in the permission structure can be managed centrally through roles, rather than changing individual permissions for each user.
• Compliance: RBAC supports compliance with security policies and legal regulations by providing clear and auditable access control.

An example: In a company, there might be roles such as "Employee," "Manager," and "Administrator." Each role has different permissions assigned:

• Employee: Can access general company resources.
• Manager: In addition to the rights of an employee, has access to resources for team management.
• Administrator: Has comprehensive rights, including managing users and roles.

A user classified as a "Manager" automatically receives the corresponding permissions without the need to manually set individual access rights.