mod_auth_aix is an Apache module which allows the Apache Web server to use AIX Loadable Authentication Modules as its source of basic authentication. Due to its generic approach, mod_auth_aix should work with any AIX Loadable Authentication Module, including DCE. "Loadable Authentication Modules" are AIX's way to extend the identification and authentication functions of the operating system. They are, to a certain degree, the AIX equivalent of the PAM and NSS mechanisms known to many other systems.
mod_vhs is an Apache 2.2+ Web server module allowing mass virtual hosting without the need for file-based configuration. The virtual host paths are translated from any database supported by mod_ldap or mod_dbd at request time from MySQL, LDAP, PAM, or a system password file. PHP security can be basically auto-configured from the database using this module. Requests are cached by mod_ldap when configured.