open-consul/website/pages/docs/enterprise/sentinel.mdx

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