Firewall rules monitor your incoming HTTP traffic to allow, challenge, block, or log requests based on characteristics that you define.
Cloudflare Firewall Rules offer power and flexibility by targeting HTTP traffic and applying custom criteria to block, challenge, log, or allow certain requests.
In essence, firewall rules allow you to examine all incoming site traffic. Requests matching the criteria you defined are subject to a specific action in response.
You can manage your firewall rules via the:
- Firewall Rules UI (Firewall Rules tab under the Firewall app in the Cloudflare dashboard), and
- APIs for Firewall Rules and Cloudflare Filters.
To get started, consult the following resources: