---
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).
