Role-based access control (RBAC), also known as role-based security, restricts network access based on the role a user has within an organization.
RBAC is a policy-neutral access control mechanism. The components of RBAC are role permissions, user roles, and role-to-role relationships. RBAC improves cyber-security and protects sensitive data.
Kubernetes enables RBAC by default. See Using RBAC Authorization for details.