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What Does Web Application Firewall Do?

Web application firewall inspects the incoming traffic and filters the suspicious traffic that could be a potential threat to the security of your site. Any web application vulnerability can allow the cyber criminals to steal the website data, paralyze or hijack your web applications.

With a web application firewall, you can defend your website from attacks that include SQL injection attacks, D-DoS attacks, and XSS (cross-site scripting) attacks. WAF is more advanced than the traditional IDS, IPS, and other standard firewalls.

WAF can be deployed as a hardware device, inline web server, or as a server plugin. It runs directly on the web servers intercepting all the HTTP requests. it examines each request filtering them before they reach the web servers.

WAF analyzes POST and GET requests when applying the defined rules that you may have set to detect and filter the illicit traffic. WAF can block the illegal traffic and for all suspicious activities, poses a challenge in the form of CAPTCHA to the visitors it is suspicious about. It accepts the traffic if the CAPTCHA is answered correctly and blocks them if the traffic is not genuine. As a user, you can regulate the security settings the way your business operations require.