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How to Use Cloudflare for Security
Leverage Cloudflare's security features to protect your site.
Cloudflare is more than a CDN – it's a comprehensive security platform. This guide covers the most important Cloudflare security features: DDoS protection, WAF, bot management, rate limiting, and security headers.
150+
Security checks
16
Categories covered
30s
Scan duration
100%
Detection coverage
Key Findings
DDoS Protection Not Enabled medium
Rate Limiting Not Set medium
1. DDoS Protection
Cloudflare's DDoS protection automatically detects and mitigates DDoS attacks at the network edge. Enable "I'm Under Attack" mode during active attacks. Use the "DDoS" tab to adjust sensitivity. Cloudflare's free plan includes basic DDoS protection, while paid plans offer more advanced options.
2. Web Application Firewall (WAF)
Cloudflare's WAF protects against SQL injection, XSS, and other OWASP Top 10 attacks. Enable the "Cloudflare Managed Ruleset" for broad protection. Consider adding custom rules for your specific application needs. The free plan includes core WAF functionality.
3. Bot Management
Bots consume resources and can scrape your content. Enable "Bot Fight Mode" (free plan) to block most bots. For paid plans, use "Bot Management" to distinguish good bots from bad ones. You can also create challenge rules for suspicious bots.
4. Rate Limiting
Create rate limiting rules for login, API, and other critical endpoints. Set a threshold (e.g., 10 requests per minute) and action (block, challenge, or log). Rate limiting prevents brute‑force attacks and API abuse. OffURL can detect if your site is using Cloudflare and check if rate limiting is configured.
5. Security Headers via Cloudflare
Cloudflare can automatically add security headers: HSTS, CSP, X‑Frame‑Options, and more. Use the "Edge Certificates" tab to enable "Always Use HTTPS". Use Transform Rules to add custom headers if needed.
The Problem
Many sites don't fully utilize Cloudflare's security features
- DDoS protection not configured
- WAF not enabled or not using managed rules
- No bot protection
- Rate limiting not set up
- Security headers not added via Cloudflare
OffURL Solution
OffURL detects if you're using Cloudflare and checks configuration
- Detect Cloudflare presence via headers
- Check for security headers added by Cloudflare
- Provide recommendations for Cloudflare security features
- Generate an LLM‑ready PDF for AI‑assisted setup
Key Features
Cloudflare detection
We detect if your site is behind Cloudflare.
Security headers
We check for Cloudflare‑added security headers.
LLM‑ready PDF
Get a report formatted for ingestion into your AI assistant.
Actionable recommendations
Get specific recommendations for Cloudflare configuration.
How do I check if Cloudflare is properly securing my site?
Run an OffURL audit. We detect if Cloudflare is in use and check for security headers, HSTS, and other indicators. You'll get recommendations to enable additional Cloudflare security features.
Frequently Asked Questions
What is OffURL and how does it work?
OffURL is a comprehensive website security and performance audit tool. It scans your site for 150+ checks including SSL, security headers, malware, XSS, SQL injection, email security, and more.
Is the security audit really free?
Yes. Your first security report is completely free and includes premium features like detailed findings, fix steps, and the full 150+ checks.
How can I use AI to fix security issues?
Download the premium PDF report and paste it into your preferred LLM (Claude, ChatGPT, Gemini, Cursor) with a prompt asking for specific fixes for your framework.
How long does the security audit take?
Most audits complete in 10‑30 seconds. The scan includes DNS lookups, SSL analysis, HTTP requests, port scanning, and vulnerability tests.
Do I need to create an account?
No. OffURL works without registration. Your first audit is free with premium features included.
What vulnerabilities can OffURL detect?
OffURL detects XSS, SQL Injection, NoSQL Injection, LDAP Injection, XXE, SSRF, SSTI, Code Injection, Command Injection, Open Redirect, Path Traversal, LFI, RFI, CRLF Injection, Parameter Pollution, and CORS Misconfiguration.