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The following diagram depicts ONAP Security Architecture.

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Note: during Istanbul, service-to-service (workload-to-workload) authorization will be configured first (high priority). Then, OOM will visit end-user-to-service (workload) authorization.

• The authorization policy enforces access control to the inbound traffic in the server side Envoy proxy. Each Envoy proxy runs an authorization engine that authorizes requests at runtime. 
• When a request comes to the proxy, the authorization engine evaluates the request context against the current authorization policies, and returns the authorization result, either ALLOW or DENY.
• Istio authorization policies are configured using .yaml files.

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<source: https://istio.io/latest/docs/concepts/security/#authentication-policies>

Authorization policies support ALLOW, DENY and CUSTOM actions. The following digram depicts the policy precedence. 

• CUSTOM → DENY → ALLOW
• in ONAP Istanbul, DENY and ALLOW will be configured first, as coarse-grained authorization. Then, CUSTOM action would be considered for fine-grained authorization in the future (as time allows).

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<source: https://istio.io/latest/docs/concepts/security/#authentication-policies>

Example,

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<source: https://istio.io/latest/docs/concepts/security/#authentication-policies>

Role-Based Access Control

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Note: during Istanbul, service-to-service (workload-to-workload) authorization will be configured first (high priority). Then, OOM will visit end-user-to-service (workload) authorization.

• The authorization policy enforces access control to the inbound traffic in the server side Envoy proxy. Each Envoy proxy runs an authorization engine that authorizes requests at runtime. 
• When a request comes to the proxy, the authorization engine evaluates the request context against the current authorization policies, and returns the authorization result, either ALLOW or DENY.
• Istio authorization policies are configured using .yaml files.

Image Modified

<source: https://istio.io/latest/docs/concepts/security/#authentication-policies>

Authorization policies support ALLOW, DENY and CUSTOM actions. The following digram depicts the policy precedence. 

• CUSTOM → DENY → ALLOW
• in ONAP Istanbul, DENY and ALLOW will be configured first, as coarse-grained authorization. Then, CUSTOM action would be considered for fine-grained authorization in the future (as time allows).

Image Modified

<source: https://istio.io/latest/docs/concepts/security/#authentication-policies>

Example,

Image Modified

<source: https://istio.io/latest/docs/concepts/security/#authentication-policies>

Role-Based Access Control

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