# Authenticating Users via LDAP

To connect cBioPortal to an external user database such as Active Directory will require the installation of Keycloak. Please read the Wiki page on Authenticating and Authorizing Users via Keycloak for information on how to connect the cBioPortal with Keycloak. You can also read how to connected Keycloak to Active Directory via LDAP on the User Storage Federation webpage of the Keycloak website.