- Authentication type (see the
- Authentication provider (see the
- Authorization (see the
mod_authnz_ldap is both an authentication and authorization provider. The module
mod_authn_alias is not an authentication provider in itself, but allows other authentication providers to be configured in a flexible manner.
mod_authz_host provides authorization and access control based on hostname, IP address or characteristics of the request, but is not part of the authentication provider system.
You probably also want to take a look at the Access Control howto, which discusses the various ways to control access to your server.