Is there a tool to know if a website uses a firewall?

closed as too broad by Steffen Ullrich, ThoriumBR, Xander, AndrolGenhald, schroeder Jun 25 '18 at 18:50

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There are multiple tools for WAF detection. The problem is that they are not much efficient / reliable. They can do the basics.

e.g.: wafw00f is a WAF detection tool.

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