1. Product overview The main use-case of OpenOTP LDAP Bridge is enabling enterprise applications that use LDAP as external authentication mechanism to work with OpenOTP. LDAP Bridge allows authentication to be delegated to an OpenOTP server transparently, without changing the LDAP back-end. From the client applications perspective, the main change is that it will use the LDAP Bridge as an LDAP server, instead of the backend-end LDAP server. LDAP Bridge works by relaying LDAP messages to a back-end LDAP server.