RSA SecureID: RSA SecureID is a commonly used two-factor authentication (2FA) system that can integrate with VMware Identity Manager for enhanced security during authentication, making it a suitable AAA system for user authentication.
LDAP and OpenLDAP based on Active Directory (AD): VMware Identity Manager can integrate with LDAP and OpenLDAP directories, including Active Directory (AD), for centralized user authentication. This allows users to authenticate against an organization's directory service.