FreeIPA with LDAP FreeIPA is an LDAP and Kerberos domain controller for Linux systems. Enable this option if you plan to provide a FreeIPA Domain Controller using the LDAP protocol. You can also enable the 'freeipa-ldaps' service if you want to provide the LDAPS protocol. Enable the 'dns' service if this FreeIPA server provides DNS services and 'freeipa-replication' service if this FreeIPA server is part of a multi-master replication setup.