Can CF firewall-rules support the recognition of browser language? if the browser or OS system language is/not English/chinese…or more languages, allow/block access.
That feature isn’t live yet, but the http.request.accepted_languages[] field should work in Transform rules. Then you could add a Request Header that a Firewall Rule would check for, then block (or allow).
https://developers.cloudflare.com/ruleset-engine/rules-language/fields
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