install modsecurity for your platform
get rules from gotroot applicable to your modsecurity version
- download from http://gotroot.com/ into /etc/apache2/modsecurity/ for example
- recommended confs: apacheN-rules, exclude, jitp, proxy, recons, rootkits, rules, useragents
create a config for apache to load the modsecurity module
[+]restart apache
implement more TikiSecurity