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OpenLDAP drops TCP wrappers support
Fedora has https://fedoraproject.org/wiki/Changes/Deprecate_TCP_wrappers[deprecated the use of TCP wrappers]. The OpenLDAP project also https://www.openldap.org/doc/admin24/security.html#TCP%20Wrappers[discourages their use] and recommends that an IP firewall is used instead. With this update, OpenLDAP will not be configured with `--enable-wrappers` and so any TCP wrappers configuration will have no effect on OpenLDAP. Other means should be used to protect the OpenLDAP server.
Replace authconfig with authselect
Fedora 28 replaces authconfig with authselect as the default tool for generating PAM configuration files and nsswitch.conf. On new installations, authselect, together with an authconfig compatibility tool, will be installed by default instead of authconfig. On upgraded installations, authconfig will be replaced with authselect and the compatibility tool but the configuration generated by authconfig will be left intact. The authconfig compatibility tool will be removed from Fedora in a future release. The https://github.com/pbrezina/authselect/tree/master/src/man/authselect-migration.7.txt.in.in[authselect-migration(7)] man page explains how to migrate from authconfig to authselect.