--- sidebar_position: 48 sidebar_label: External User Authenticators and Directories --- # External User Authenticators and Directories 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/)