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toc_folder_title: External User Authenticators and Directories
toc_priority: 48
toc_title: Introduction
---
# External User Authenticators and Directories {#external-authenticators}
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ClickHouse supports authenticating and managing users using external services.
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The following external authenticators and directories are supported:
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- [LDAP ](./ldap.md#external-authenticators-ldap ) [Authenticator ](./ldap.md#ldap-external-authenticator ) and [Directory ](./ldap.md#ldap-external-user-directory )
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- Kerberos [Authenticator ](./kerberos.md#external-authenticators-kerberos )
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- [SSL X.509 authentication ](./ssl-x509.md#ssl-external-authentication )
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[Original article ](https://clickhouse.com/docs/en/operations/external-authenticators/index/ ) <!--hide-->
