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[WAF] About Cloudflare WAF functions [Security]

2022.06.13

table of contents

1 Cloudflare WAF overview
2 Key features of Cloudflare WAF
3 summary

This is Ohara from the technical sales department.

This article summarizes
Cloudflare (Information as of June 2022)

Cloudflare WAF overview

Cloudflare WAF (Web Application Firewall) is an advanced software that keeps applications secure and productive, stops DDoS attacks, evades bots, detects anomalies and malicious payloads, and monitors browser supply chain attacks. Application security platform.

Cloudflare's powerful application security capabilities are integrated with other leading application performance portfolios and, like the foundation of Cloudflare CDN, are delivered from global cloud platforms around the world.

Key features of Cloudflare WAF

Cloudflare WAF is powered by a global edge network spanning 250+ cities in 100+ countries with instant, unlimited scaling.

Security features	Main features
Layered protection from multiple WAF rulesets Prevent malicious payloads in request components with multiple rulesets.	・Rules managed by Cloudflare ・Third party rulesets (OWASP TOP 10) ・Custom rulesets to stop attacks
WAF ML (machine learning based detection)	WAF custom rules leverage ML-generated attack scores to stop bypasses, attack variations, and anomalies.
Updated rules for zero-day protection	Rules are continually updated by the Cloudflare security team to protect against new attacks and zero-day vulnerabilities before patches and updates become available.
Platform-specific rule sets for major CMS and e-commerce platforms	Protect platforms such as WordPress, Joomla, Drupal, Magneto, and IIS at no additional charge.
Custom rule configuration	When deploying a rule or ruleset, choose from BLOCK / LOG / CHALLENGE / CAPTCHA / RATE LIMIT and other options.
Advanced rate limiting	Rate limit individual IP addresses or block abuse, DDoS, and brute force attacks that target your applications and APIs by header, ASN, or country.
IP reputation database	Block connections from malicious IP addresses using real-time intelligence of over 1 billion unique IP addresses.
Data loss prevention	Block responses that contain personally identifiable information or sensitive data such as financial information, credit card numbers, API keys, and other secrets. Exposed Credential Checking Detects brute force attacks with stolen credentials before end user accounts are compromised.
SSL/TLS	Completely mitigate and configure SSL traffic for your applications.
Fewer false positives	Rules tested with high volumes of traffic to minimize false positives.
gRPC and WebSocket support	Proxy and secure gRPC and WebSocket endpoint traffic.
Customizable block page	Customize block pages to suit your site visitors.

summary

Cloudflare WAF is a service that combines with Cloudflare CDN itself, enabling default WAF functionality with a simple click from the console. Also, the above Cloudflare WAF features are just examples; Cloudflare's Enterprise plan offers even more flexible and customizable features.

Beyond also provides Cloudflare CDN and WAF construction, operation and maintenance services Please feel free to contact us when implementing Cloudflare.

If you found this article helpful , please give it a like!

[2025.6.30 Amazon Linux 2 support ended] Amazon Linux server migration solution

The person who wrote this article

About the author

ohara

I started my career in the telecommunications industry as a salesperson in charge of introducing IT products such as NW services, OA equipment, and groupware for corporations.

After that, he worked as a pre-sales engineer for physical servers/hosting services and as a customer engineer for SaaS-type SFA/CRM/BtoB e-commerce at an SIer-based data center business company, before joining his current company, Beyond.

Currently, I am stationed in Shenzhen, China, the Silicon Valley of Asia, and my daily routine is to watch Chinese dramas and billbill.

Qualification: Second class bookkeeping

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