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---
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layout: docs
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page_title: Sentinel in Consul
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description: >-
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Consul Enterprise uses Sentinel to augment the built-in ACL system to provide
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advanced policy enforcement. Sentinel policies can currently execute on KV
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modify and service registration.
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---
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# Sentinel in Consul
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<EnterpriseAlert>
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This feature requires
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HashiCorp Cloud Platform (HCP) or self-managed Consul Enterprise.
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Refer to the{' '}
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<a href="/docs/enterprise#consul-enterprise-feature-availability">enterprise feature matrix</a>
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{' '}for additional information.
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</EnterpriseAlert>
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Sentinel policies extend the ACL system in Consul beyond static "read", "write",
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and "deny" policies to support full conditional logic and integration with
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external systems. [Learn more about Sentinel here.](https://docs.hashicorp.com/sentinel/concepts/).
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To get started with Sentinel in Consul,
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[read the general documentation](https://docs.hashicorp.com/sentinel/consul/) or
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[Consul documentation](/docs/agent/sentinel).
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