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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.

So from what I understand, this will handle only HTTP. What will happen if HTTPS traffic goes through the WAF?

Does it reduce the request time? or are there any performance issues?

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    Is your question about performance or security?
    – schroeder
    Commented Jun 16, 2021 at 14:28
  • I want to know, is it reduce the performance?
    – FGH
    Commented Jun 16, 2021 at 14:58
  • That's not a security question, then.
    – schroeder
    Commented Jun 16, 2021 at 15:51
  • I can see that the statement ...is an application firewall for HTTP applications can be confusing. In my opinion it would have been better to use the term web applications and leave the protocol out of it.
    – Jeroen
    Commented Jun 16, 2021 at 16:06
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    Adding any security filtering will negatively impact performance. Especially at the application layer. Commented Jun 16, 2021 at 16:46

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