Authentication is establishing the identity of a user or system and verifying that the identity is valid.
In the Broker, Authentication is a process of passing the Source Type and Token to an external authenticator. For more information about Source Type and Token, see Identity.
The external identity provider checks the identities and returns a value to report whether or not the identity is authentic. If the identity is not authentic a security exception is raised.
Some identity providers, including LDAP, support only a single type of authentication token. If a token of another type is passed in, an exception is raised. For example, LDAP supports only a usernameAndPassword token.
If you want to use LDAP to authenticate an incoming identity token, the LDAP server must be LDAP V3.