What is the difference between blocklist and allowlist WAFs?Ī WAF that operates based on a blocklist (negative security model) protects against known attacks. The value of a WAF comes in part from the speed and ease with which policy modification can be implemented, allowing for faster response to varying attack vectors during a DDoS attack, rate limiting can be quickly implemented by modifying WAF policies. These policies aim to protect against vulnerabilities in the application by filtering out malicious traffic. 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.Ī WAF operates through a set of rules often called policies. This method of attack mitigation is usually part of a suite of tools which together create a holistic defense against a range of attack vectors.īy deploying a WAF in front of a web application, a shield is placed between the web application and the Internet.

A WAF is a protocol layer 7 defense (in the OSI model), and is not designed to defend against all types of attacks. It typically protects web applications from attacks such as cross-site forgery, cross-site-scripting (XSS), file inclusion, and SQL injection, among others. What is a Web Application Firewall (WAF)?Ī WAF or web application firewall helps protect web applications by filtering and monitoring HTTP traffic between a web application and the Internet. Secure endpoints for your remote workforce by deploying our client with your MDM vendorsĮnhance on-demand DDoS protection with unified network-layer security & observabilityĬonnect to Cloudflare using your existing WAN or SD-WAN infrastructure Get frictionless authentication across provider types with our identity partnershipsĮxtend your network to Cloudflare over secure, high-performing links Integrate device posture signals from endpoint security programs

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