Hi, I have setup a configuration rule that will set the Security Level to HIGH for user agent containing “Firefox/6”. I get a blank page on Firefox browser when visit my website with user agent “Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:109.0) Gecko/20100101 Firefox/89.0”. It obviously hits the rule. But I expect that it should show Cloudflare’s challenge page.
I use the following command to check HTTP status and it returns 404:
$ curl -ISs -A "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:109.0) Gecko/20100101 Firefox/89.0" https://www.domainxxxx.com/
It’s a bug of Cloudflare?