Thanks to Johan Bergström
access - This module provides a simple host-based access control.
addition - This module adds contents of other locations before and after the current location's content.
auth_basic - This module protects your site or parts of it with username and password based on HTTP Basic Authentication.
+auth_ldap - LDAP module for nginx which supports authentication against multiple LDAP servers.
auth_pam - This module provides authentication via PAM.
auth_request - Module implementing client authorization based on the result of a subrequest.
autoindex - This module provides automatic directory listings.
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+# Copyright 2016 Gentoo Foundation.
+# Distributed under the terms of the GNU General Public License v2
+# $Id$
+
+# This file contains descriptions of NGINX_MODULES_STREAM USE_EXPAND flags.
+
+# Keep it sorted.
+access - This module allows limiting access to certain client addresses.
+limit_conn - This module is used to limit the number of connections per the defined key.
+upstream - This module is used to define groups of servers that can be referenced by the proxy_pass directive.