![]() The number of allowed Rate Limiting rules depends on the domain’s plan:īlock, Legacy CAPTCHA, JS Challenge, Managed Challenge, or LogĪny duration entered between 10 seconds and 86400 seconds (24 hours)Īny value entered between 10 seconds and 3600 seconds (1 hour).Ĭloudflare Rate Limiting supports multiple levels of configuration control depending on the domain’s Cloudflare plan. Rate Limiting is an add-on service for all customer plans, available in Security > WAF > Rate limiting rules. Once an individual IPv4 address or IPv6 /64 IP range exceeds a rule threshold, further requests to the origin web server are blocked with an HTTP 429 response that includes a Retry-After header to indicate when the client can resume sending requests. The most common uses for Rate Limiting are DDoS protection, Brute-force attack protection, and to limit access to forum searches, API calls, or resources that involve database-intensive operations at your origin. Request rates are calculated locally for individual Cloudflare data centers. Task 4: Configure the Bypass option (Enterprise plans only)Ĭloudflare Rate Limiting automatically identifies and mitigates excessive request rates for specific URLs or for an entire domain.Task 3: Configure Advanced Response (only Business and Enterprise plans).Task 2: Configure Advanced Criteria (only Business and Enterprise plans).Task 1: Configure a basic Rate Limiting rule.
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