Alias /dl /usr/share/dl

<Directory /usr/share/dl>
  AllowOverride Options
  <IfModule mod_authz_core.c>
    # Apache 2.4
    <RequireAny>
      Require ip 127.0.0.1
      Require ip ::1
    </RequireAny>
  </IfModule>
  <IfModule !mod_authz_core.c>
    # Apache 2.2
    Order Deny,Allow
    Deny from All
    Allow from 127.0.0.1
    Allow from ::1
 </IfModule>
</Directory>

<Directory ~ /usr/share/dl/(style/)?include>
  <IfModule mod_authz_core.c>
    # Apache 2.4
    Require all denied
  </IfModule>
  <IfModule !mod_authz_core.c>
    # Apache 2.2
    Order Deny,Allow
    Deny from All
 </IfModule>
</Directory>