Web Application Firewall: Network Security Models and Configuration

Web Application Firewalls (WAFs) are deployed to protect web applications and they offer in depth security as long as they are configured correctly. A problem arises when there is over-reliance on these tools. A false sense of security can be obtained with the implementation of a WAF. In this paper, we provide an overview of traffic filtering models and some suggestions to avail the benefit of web app firewall.