Web application firewall (WAF) definitionĪ WAF is a critical component of an enterprise security infrastructure, providing protection between end users and your web application, potentially at multiple layers of the Open Systems Interconnection (OSI) model. In a modern infrastructure, where attacks are more sophisticated and cloud-based resources are commonplace, these security measures are often still in place, but can be further enhanced by a web application firewall (WAF). Traditionally, web application security was handled using a combination of the corporate firewall, authentication to an LDAP directory, and a hardened web server in the DMZ network. As web applications mature and become more popular, organizations need to focus more on maintaining a positive security footprint around them.
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