This extension has it all: htaccess-maker, Web Application Firewall, protection for spam, SQL injection, CSRF-shield etc., blocking options and even more.
You really need to read the documentation but trust me, it's worth the effort and you will understand this extension a lot better.
Support is without doubt the very best in the Joomla community, Nicholas is a great guy and gives you all the support you need and even more! Absolutely recommended!
Glad I could help.