in cacti.conf I tried to edit the default context from localhost to 0.0.0.0 (and everything in between). Now I only have
Alias /cacti /usr/share/cacti
<Directory /usr/share/cacti/>
Order Deny,Allow
Deny from all
Allow from 0.0.0.0
</Directory>
in /etc/httpd/conf.d/cacti.conf. (also tried 192.168.0.0/24 and many others)
I have also tried chown -R apache:apache /usr/share/cacti and 0:0 and cacti:cacti of the same folder. Always the same permissions error.
I cannot log in locally, server is many many miles away with zero desktop.