We want to implement WAF for one of our clients and we need this implementation for multiple subdomains . So wanted to check which Cloudflare plan would support this use case.
Generally, when using Cloudflare Firewall rules, they apply for main domain and all the sub-domains (DNS records) which are being Cloud (proxied via Cloudflare).
I believe using the “hostname” field
http.host would get you the trick …
If you are interested into more advanced
Managed WAF Rules, you would need to get at least a Pro Plan to enable this option and other rules offered from it just by a single click
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