Legitimate requests are passed through the WAF to the app, which responds as usual. If an attack is detected, the request is dropped before it reaches the web app. It intercepts inbound HTTP requests and inspects them for patterns that indicate an attack. ![]() How Does a Web Application Firewall Work?Ī WAF is a reverse proxy. WAFs are an effective and valuable defense against the most common attacks against web apps and APIs. That may work in the short term, but a WAF provides an additional layer of defense that can be dynamically updated to protect against emerging threats. If you don’t use a WAF, you rely on the web app to repel attacks. A web application firewall (WAF) works alongside other security measures to defeat bad actors and keep sites and apps safe. Vulnerabilities will be exploited, data will be stolen, web pages will be defaced, and malware will be injected. ![]() Sooner or later, every website, app, and API is targeted by malicious bots or their cybercriminal operators. This article explores WAFs, how they work, the most popular and effective examples, and why you should consider using a WAF to protect your site or app from cybercriminals. It monitors inbound traffic and filters malicious requests before they reach the potentially vulnerable application. What is a Web Application Firewall (WAF)?īy Hannah Grace Holladay / August 29th, 2022Ī web application firewall (WAF) sits between web applications and the internet.
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