Web Application Firewall
Is your website protected from application attacks ? Even with an adequate protection at the IP level of your network, it does not protect your Web applications. Firewalls must pass Web flow (http, https) so also let pass potential Web application attacks. The best way to protect your website is to use an Web Application Firewall (WAF). The WAF works at the application layer (OSI Model) and analyzes the content of Web flow to block attacks and then secure your Web applications.
Figure 1. A company's trusted inside server and application environment