Authorization decision

As explained in Google Anthos in Action

Authorization is the process of determining which actions or resources an authenticated actor is permitted to access.

An authorization decision determines whether an authenticated user, service, or workload may perform an action or access a resource. In distributed systems, the decision is enforced across service boundaries, cluster layers, and cloud projects rather than at a single endpoint. section 4.3.3 section 2.3.2

Authorization decisions appear in several operational layers:

• Service meshes apply identity-based authorization to service-to-service communication and expose policy controls for access control, quotas, and rate limits. section 4.3
• Clusters use role-based access control so existing permissions govern both direct connectivity and requests passing through a proxy. section 2.3.2
• Cloud access adds another decision: a user must be permitted to view the attached Google Cloud project before using Connect, even when cluster permissions allow access. section 2.3.2
• Layered validation rejects requests that skip an authentication or authorization stage, preventing an invalid request from proceeding to the next layer. section 2.3.2

A proxied cluster request

A user connects to a cluster through Anthos Connect. The request carries the user’s credentials, is authenticated at each stage, and must satisfy both cluster RBAC and permission to view the associated Google Cloud project. Failure at any layer rejects the request. section 2.3.2

Figure 4.5 Istio authorization architecture

Use the authorization architecture to trace how identities, policies, and enforcement components participate in a service-mesh authorization decision. section 4.3.3

How Google Anthos in Action covers it

How deep it goes

Traces layered identity and permission checks but does not specify detailed authorization policy syntax.

Examples

Uses Istio service authorization, Anthos Connect requests, cluster RBAC, and Google Cloud project visibility checks.

What it assumes

Assumes authenticated identities and basic familiarity with cluster RBAC, cloud projects, proxies, and service communication.

What you can do after

Evaluate/understand why a distributed request is allowed or rejected at service, cluster, proxy, and cloud-permission layers.

How it connects

Connects authentication, RBAC, IAM, service mesh, zero-trust security, and policy enforcement.

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Also explained in

• 

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  Authorization in ActionAn authorization decision is the determination of whether a principal is allowed to perform an action on a resource.
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  Building Web APIs with ASP.NET CoreAuthorization is the process of determining whether an authenticated or anonymous caller is permitted to access a resource or perform an operation.
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  Grokking Web Application SecurityAn authorization decision is a determination of whether an authenticated principal may access a resource or perform an action.
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  Pro ASP.NET Core 7, Tenth EditionAuthorization is the process of determining whether an authenticated principal may access a resource or perform an operation.
• 

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  The Well-Grounded Python Developer: How the pros use Python and FlaskAuthorization is the process of determining which actions or resources an authenticated user or system is permitted to access.
• 

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  Azure SecurityAuthorization is the process of determining whether an authenticated identity has permission to perform a requested action on a system or resource.

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Related concepts

• policy engineproduced by · A policy engine is a software component that evaluates policies against requests, resources, actions, or other inputs and produces decisions or enforcement outcomes.
• authenticationcontrasts with · Authentication is the process of establishing or verifying the identity of a user, service, device, or other communicating entity.
• identityuses · Identity is the property or representation by which an entity is distinguished and recognized as that particular entity.
• role-based access controlimplemented by · Role-based access control is an authorization model that assigns permissions to roles and grants users or other principals access through their assigned roles.
• authorize attributeconfigured by · The ASP.NET Core Authorize attribute declares that an endpoint or application component requires authentication or satisfaction of specified authorization requirements.
• authorizationpart of · Authorization is the determination and enforcement of rules governing which subjects may access resources or perform operations.

This explainer was generated by Manning's knowledge graph from the text of Google Anthos in Action. The section links point to the parts of the book it draws on.