![]() Network level. Network WAFs function at a local level and usually involve custom hardware solutions, so they tend to be very expensive.3 Different Types of WAFs Explainedīeyond the types of rules they use, WAFs also work at three different levels: This can be used to turn away traffic exhibiting behavior consistent with SQL injection, XSS, and other attacks. Blacklisting will let most users through by default, except for those you choose to block. With a whitelist approach, your firewall will deny all requests except those that come from pre-approved IP addresses. However, there are some that rely exclusively on one method or the other. In most cases, modern firewalls use a combination of whitelisting and blacklisting, which is referred to as a hybrid model. The primary advantage of a WAF is the ability to deploy new rules quickly. In the event that their IP address is blacklisted or their activity is otherwise suspicious, your WAF will block them. If no rules are violated, the user’s request is passed on to your server, which returns the content they requested.Your WAF intercepts this request and analyzes it to determine if the user breaks any of your predetermined rules.This sends an HTTP request to your server. A user attempts to access your site either by clicking on a link or typing a URL into their browser.However, to boil it down to the simplest possible terms, it works like so: The various types of WAFs use slightly different procedures to deter malicious traffic. That said, a firewall is just one part of a complete security strategy. These potential assaults include SQL injections, cross-site scripting (XSS), session tampering, DDoS attacks, and more. Choose a Hosting Provider that Offers a WAFĪ WAF uses “rules” to help protect your website against specific types of threats. Install and Activate a WordPress Security Plugin ![]() 3 How to Implement a WAF for Your WordPress Site (3 Possible Approaches).1 What Is a WAF (And How Does It Work)?.
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