WAF Deployment Models A WAF can be implemented in various ways. There are three primary types of WAF: 1. Network-based WAF This is generally a hardware-based solution that is installed locally on the network infrastructure. It offers low latency and high performance, which is crucial for real...
WAF Security Models WAFs can use a positive or negative security model, or a combination of the two: Positive security model—the positive WAF security model involves a whitelist that filters traffic according to a list of permitted elements and actions—anything not on the list is blocked. The...
How Does A WAF Work? Figure 1:Basic WAF Architecture. When a WAF is deployed in front of a web application, a protective shield is placed between the web application and the internet that monitors all the traffic between the application and the end user(s). ...
A WAF, or web application firewall, defends the Layer 7 perimeter. In other words, a WAF is responsible for securing business-critical web applications from the OWASP Top 10, zero-day threats, known or unknown vulnerabilities, as well as an array of other application layer attacks. As organi...
While a proxy server protects a client machine’s identity by using an intermediary, a WAF is a type of reverse-proxy, protecting the server from exposure by having clients pass through the WAF before reaching the server. A WAF operates through a set of rules often called policies. These ...
A WAF, or web application firewall, defends the Layer 7 perimeter. In other words, a WAF is responsible for securing business-critical web applications from the OWASP Top 10, zero-day threats, known or unknown vulnerabilities, as well as an array of other application layer attacks. As organi...
While a proxy server protects a client machine’s identity by using an intermediary, a WAF is a type of reverse-proxy, protecting the server from exposure by having clients pass through the WAF before reaching the server. A WAF operates through a set of rules often called policies. These ...
We can divide the function of the WAF into two distinct parts: protecting inbound and outbound traffic. The inbound protection functionality of the WAF is responsible for inspecting application traffic from the outside world. As part of protecting the web app from inbound traffic, the WAF needs...
A WAF analyzes the headers, query strings, and body of HTTP requests (e.g., GET requests, POST requests, PUT requests, and DELETE requests) searching for malicious requests, suspicious patterns, and known threats. When a match is found, the firewall can block the request and alert security...
WAF vs. RASPAnother technology used for monitoring and protection is Runtime Application Self-Protection (RASP). RASP blocks malicious traffic without the need for static rules using the application itself. Rather than relying on predictions about how an application might behave in a particular ...