Best WAF for Google Cloud
Find the optimal WAF solution for Google Cloud Platform. Compare Cloud Armor and third-party options for GCE, GKE, and Cloud Run workloads.
Google Cloud Armor is GCP's native WAF and DDoS protection service, providing enterprise-grade security for applications behind Google Cloud Load Balancing.
For teams running on GCP, Cloud Armor offers deep integration with the platform's networking stack and access to Google's threat intelligence. Adaptive Protection uses machine learning to detect and respond to L7 DDoS attacks automatically, and preconfigured WAF rules cover the OWASP Top 10 and common attack patterns.
Top WAF Providers for Google Cloud
Google Cloud Armor
Editor's ChoiceGoogle Cloud Armor is the natural choice for GCP workloads. It integrates natively with Cloud Load Balancing, GKE, and Cloud CDN, providing WAF and DDoS protection backed by Google's global network. Adaptive Protection uses ML to detect and mitigate L7 DDoS attacks automatically. For GCP-native deployments, there is no better-integrated option.
Key Benefits:
- Native GCP integration with all load balancers
- ML-powered Adaptive Protection
- Google global network for DDoS defense
- Preconfigured OWASP Top 10 rules
Industry-leading WAF with global CDN integration, offering robust protection against OWASP threats with easy setup and generous free tier.
Developer-friendly WAF using proprietary SmartParse technology, offering low false positives and seamless DevOps integration for modern application security.
Enterprise-grade cloud WAF with industry-leading threat research, offering comprehensive application security with advanced bot protection and API security.
Fully managed cloud WAF combining automatic policy generation, advanced bot mitigation, and 24/7 expert support with industry-leading DDoS protection.
AI-powered WAF with preemptive zero-day protection, featuring dual machine learning engines and minimal false positives for cloud-native applications.
Enterprise application security platform from F5 Networks combining behavioral analytics, bot defense, API protection, credential stuffing prevention, and L7 DDoS mitigation. The WAF that banks, airlines, and governments have relied on for over two decades.
Enterprise CNAPP with integrated WAF, API security, and bot management, designed for cloud-native applications across multi-cloud environments.
API-first security platform combining cloud-native WAF, automated security testing, and advanced API abuse detection with real-time blocking capabilities.
High-performance WAF built into the world's most widely used open source load balancer. Uses machine learning-powered threat detection instead of regex-based signatures, delivering 98.5% balanced accuracy with sub-millisecond latency. Enterprise product with custom pricing.
AI-powered web application firewall from Fortinet providing advanced threat detection, API protection, and bot mitigation for web applications and APIs, available as hardware appliance, VM, or cloud service.
Lightweight, high-performance WAF running natively inside NGINX Plus. Brings F5's enterprise threat intelligence to DevOps workflows with declarative configuration, Kubernetes-native deployment, and CI/CD integration. Part of the NGINX One platform.
AI-powered bot and fraud protection platform that stops advanced bots, credential stuffing, scraping, and L7 DDoS attacks across websites, mobile apps, and APIs. Forrester Leader in Bot Management with 99.99% detection accuracy and sub-2ms latency. Starts at $3,830/month.
WordPress-specific vulnerability mitigation platform with virtual patching (vPatching). Not a traditional WAF but deploys targeted mitigation rules for known WordPress vulnerabilities. Claims 74% more exploits blocked than leading WAFs. Number 1 WordPress vulnerability intelligence handler with 12K+ mitigation rules and 4.1K vulnerabilities disclosed in 2024. Free monitoring mode with no time limit.
Comprehensive WAF with flexible deployment options from appliances to cloud, featuring strong bot defense, API protection, and deep DevOps integration.
Cloud-native WAAP platform offering fully managed WAF, bot management, and DDoS protection with private cloud deployment options for enhanced data privacy.
Fully managed cloud WAF by Indusface with integrated vulnerability scanning, zero false positive guarantee, and 24/7 SOC support. Deploys in block mode from day one.
Enterprise application firewall integrated into the Citrix NetScaler (now Citrix ADC) application delivery controller, providing positive and negative security models with deep traffic inspection.
Australian-based WAAP platform combining WAF, bot management, DDoS protection, and CDN in a single solution designed for DevOps and security teams.
AI-powered WAF built natively on Kubernetes, combining behavioral threat detection with zero-configuration API protection for cloud-native applications.
Enterprise-grade next-gen WAF from Chinese cybersecurity leader NSFOCUS, offering comprehensive web and API protection with flexible cloud, on-premises, and hybrid deployment options.
API gateway with built-in WAF plugin for enterprise customers. Kong is the most popular open source API gateway (35K+ GitHub stars, 312M+ downloads) built on NGINX, processing 400B+ API calls daily. The WAF plugin is an Enterprise-only add-on that protects API endpoints at the gateway layer.
German-made, GDPR-compliant cloud WAF built for critical infrastructure and regulated industries. BSI-qualified, NIS-2 and DORA compliant. Managed WAF service available. Blocks 8M+ malicious L7 requests per customer per year. Data processing exclusively in Germany on request.
Cloud-managed WAF from Qualys that integrates with their vulnerability scanning platform, enabling one-click virtual patching of discovered vulnerabilities. Note — product was decommissioned September 2024.
What to Look For in a WAF for Google Cloud
When evaluating WAFs for Google Cloud:
- Cloud Armor Integration - Native protection for HTTP(S), TCP/SSL Proxy, and Cloud CDN load balancers
- Adaptive Protection - ML-based threat detection and automated response for L7 DDoS
- GKE Support - Protection for Kubernetes workloads via GKE Gateway Controller or Ingress
- Named IP Lists - Integration with threat intelligence feeds and preconfigured IP deny lists
- Rate Limiting - Throttle abusive clients based on request rate, IP, headers, or region
- Edge Security Policies - Apply security policies at Google's edge for earliest possible threat mitigation
Google Cloud Considerations
GCP-specific considerations when deploying a WAF:
- Cloud Armor Tiers - Cloud Armor Standard provides basic protection. Cloud Armor Enterprise (previously Plus) adds Adaptive Protection, advanced DDoS defense, and threat intelligence.
- Pricing - Standard tier charges per policy and per request. Enterprise tier is priced per protected resource with included request allowances.
- Cloud Run and Serverless - Cloud Armor can protect Cloud Run services when exposed via a global external Application Load Balancer.
- Third-Party Alternatives - Cloudflare, Fastly, and Imperva can sit in front of GCP workloads for multi-cloud consistency or additional features Cloud Armor doesn't provide.
Frequently Asked Questions
Is Google Cloud Armor sufficient as my only WAF on GCP?
For most GCP deployments, yes. Cloud Armor provides WAF rules, DDoS protection, bot management, and rate limiting. Consider adding a third-party WAF if you need advanced features like API discovery, client-side protection, or multi-cloud policy consistency.
How does Cloud Armor pricing compare to AWS WAF?
Cloud Armor Standard charges $5/month per security policy plus $0.75/million requests. Cloud Armor Enterprise charges per protected resource with higher included allowances. AWS WAF charges per web ACL, rule, and request. For comparable workloads, costs are similar, but enterprise tiers differ significantly.
Can I use Cloud Armor with Cloud Run?
Yes, but Cloud Run must be exposed via a global external Application Load Balancer with a serverless NEG. Direct Cloud Run URLs bypass Cloud Armor. Configure your Cloud Run service to only accept traffic from the load balancer using ingress settings.