Help how to block UNK?

Website, Application, Performance Security
1

What is the name of the domain?

What is the issue you’re encountering

How to block Client HTTP Version Used “UNK”

What steps have you taken to resolve the issue?

How to setup in WAF How to block Client HTTP Version Used “UNK”

Was the site working with SSL prior to adding it to Cloudflare?

Yes

What is the current SSL/TLS setting?

Full (strict)

What are the steps to reproduce the issue?

How to block Client HTTP Version Used “UNK”

2

Try this:

(not http.request.version in {“HTTP/1.0” “HTTP/1.1” “HTTP/1.2” “HTTP/2” “HTTP/3” “SPDY/3.1”})

3

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