---
toc_folder_title: External User Authenticators and Directories
toc_priority: 48
toc_title: Introduction
---

# External User Authenticators and Directories {#external-authenticators}

ClickHouse supports authenticating and managing users using external services.

The following external authenticators and directories are supported:

- [LDAP](./ldap.md#external-authenticators-ldap) [Authenticator](./ldap.md#ldap-external-authenticator) and [Directory](./ldap.md#ldap-external-user-directory)
- Kerberos [Authenticator](./kerberos.md#external-authenticators-kerberos)
- [SSL X.509 authentication](./ssl-x509.md#ssl-external-authentication)

[Original article](https://clickhouse.com/docs/en/operations/external-authenticators/index/) <!--hide-->