ss=language-yaml data-expandlinks=true data-repo=istio>apiVersion: &#34;rbac.istio.io/v1alpha1&#34;
kind: ServiceRoleBinding
metadata:
  name: book-reader
  namespace: default
spec:
  subjects:
  - properties:
      source.ip: 10.20.0.0/9
  roleRef:
    kind: ServiceRole
    name: &#34;book-reader&#34;
</code></pre><h2 id=summary>Summary</h2><p>Istio’s authorization feature provides authorization at namespace-level, service-level, and method-level granularity.
It adopts &ldquo;RBAC + conditions” model, 