Cloudflare Firewall Rules

Cloudflare Firewall Rules allows you to create rules that inspect incoming traffic and block, challenge, log, or allow specific requests.

​​ Main features

• Rule-based protection: Use pre-defined rulesets provided by Cloudflare, or define your own firewall rules. Create rules in the Cloudflare dashboard or via API.
• Complex custom rules: Each rule’s expression can reference multiple fields from all the available HTTP request parameters and fields, allowing you to create complex rules.

​​ Availability

Cloudflare Firewall Rules is available to all customers. However, the number of active firewall rules you can have and support for the Log action and regular expressions depend on your Cloudflare plan.

This table outlines the Firewall Rules features and entitlements available with each customer plan:

​​ Next steps

• Unless you are already an advanced user, refer to Expressions and Actions to learn more about the basic elements of firewall rules.

• To get started building your own firewall rules, refer to one of the following pages:

  • Manage firewall rules in the dashboard
  • Manage firewall rules via the APIs

• You can also manage firewall rules through Terraform. For more information, refer to Getting Started with Terraform Open external link .

​​ Related resources

For additional information, refer to the following pages:

• Common use cases for firewall rules
• Cloudflare Rules language