AWS WAF - AWS WAF is a web application firewall that helps protect your web applications from common web exploits.
Ansible - Radically simple configuration-management, application deployment, task-execution, and multi-node orchestration engine
ModSecurity - ModSecurity is an Open Source web application firewall developed by Trustwave's SpiderLabs.
Chef - Automation for all of your technology. Overcome the complexity and rapidly ship your infrastructure and apps anywhere with automation.
Barracuda Web Application Firewall - Barracuda Web Application Firewall offers security and DDoS protection against automated & targeted attacks.
Puppet Enterprise - Get started with Puppet Enterprise, or upgrade or expand.