Alias /cacti /var/www/html/cacti

<Location /caci>
    Order deny,allow
    Deny from all
    Allow from 192.168.0.0/24
    # Allow from .example.com
</Location>

<Directory "/var/www/hmtl/cacti">
    Options Indexes FollowSymLinks MultiViews
    AllowOverride None
    Order allow,deny
    Allow from 192.168.0.0/24
</Directory>