A web application firewall (WAF) is an application firewall for HTTP applications. It applies a set of rules to an HTTP conversation.
Generally, these rules cover common attacks such as cross-site scripting (XSS) and SQL injection.
While proxies generally protect clients, WAFs protect servers. A WAF is deployed to protect a specific web application or set of web applications. A WAF can be considered a reverse proxy.
WAFs may come in the form of an appliance, server plugin, or filter, and may be customized to an application. The effort to perform this customization can be significant and needs to be maintained as the application is modified.
Why is a Website Firewall Important?
A web application firewall (WAF) prevents website hacks and data breaches. Visitors trust you to keep them secure. Ecommerce sites that take credit card payments must be compliant with the PCI data security standards–even if it uses a third-party payment processor. Regardless of the size or type of website, a WAF will protect the integrity of your content, your website traffic, and your brand reputation.
What is a Web Application Firewall (WAF)?
A WAF is a cloud-based or hardware protection system that includes intrusion prevention and content delivery networks to ensure the integrity, confidentiality, and availability of websites. Activating a WAF protects visitors and business from data breaches, attacks, and malware infections. Hackers will abuse compromised websites by injecting SEO spam, drive-by-downloads, defacements, and malicious redirects. Keep visitors and web content secure by preventing vulnerability exploitation, brute-force (password guessing), and DDoS attacks.
Content delivery networks
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