Block ip for subdomain

Hi I have a subdomain sub.example.com

I want to restrict access of all IPs to sub and only add IPs manually to the whitelist

Does cloudflare have this feature?
Thanks for the tips
Thanks dear cloudflare!

You can do this with the following firewall rule set to “Block”

(http.host eq "sub.example.com" and not ip.src in {})
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Thanks and what should I do if I want to open the IP?

Open? You simply add the desired addresses in the right field, that’s it.

https://developers.cloudflare.com/firewall/cf-firewall-rules/fields-and-expressions has all on that.

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How about Is it possible to give an example?

Thank you very much for your response

I provided an example in the first response

(http.host eq "sub.example.com" and not ip.src in {})

The mentioned link goes more into details too.

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