WAF Sizing Guide 2026

WAF Sizing Guide:
Cloudflare vs F5 vs Imperva vs FortiWeb

Protect your web apps and APIs with the right WAF — and get competitive pricing that beats your current vendor.

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WAF Sizing by Traffic Volume

Match your peak traffic to the right tier:

Small
< 100 Mbps
Cloudflare Pro/Business or AWS WAF
DNS change only, no hardware
Medium
100 Mbps – 1 Gbps
Cloudflare Enterprise, FortiWeb 600F–1000F, Imperva Standard
Consider cloud WAF for scalability
Large
1 Gbps+
Cloudflare Enterprise, F5 i5800+, Imperva Enterprise
On-prem WAF + cloud DDoS scrubbing
⚠️ DDoS note: On-prem WAF appliances alone cannot absorb large-scale DDoS. Cloud-based scrubbing (Cloudflare Magic Transit, Imperva, AWS Shield Advanced) is required for volumetric attacks.

WAF Vendor Comparison 2026

Cloudflare WAF

Recommended

Best price/performance — cloud-native & SaaS apps

Free · Pro $20/mo · Business $200/mo · Enterprise

Check Point CloudGuard WAF

DevSecOps

AI-based zero-day blocking + AppSec-as-code CI/CD

Standard · Advanced · Enterprise (Infinity Portal)

F5 BIG-IP

Enterprise

Complex enterprise apps & financial services

i2800 (5G) · i4800 (10G) · i5800 (20G) · i10800 (40G)

Imperva WAF

Compliance

E-commerce, healthcare, PCI-DSS compliance

Professional · Business · Enterprise · Enterprise+

Fortinet FortiWeb

Fortinet

Best for Fortinet Security Fabric shops

100F (25M) · 600F (250M) · 1000F (1G) · 3000F (5G)

AWS WAF

AWS

AWS-native apps — pay-per-use, zero infra

Pay-per-use + Shield Standard/Advanced

Not sure which WAF fits your stack?

The AI sizing tool will ask about your apps, traffic, compliance needs, and hosting environment — then give you a specific recommendation.

App type & hosting
Peak traffic volume
DDoS protection needs
Compliance (PCI/HIPAA)
API security requirements
DevSecOps / CI-CD

Click the chat bubble → say "help me size a WAF"

WAF Frequently Asked Questions

What is a WAF and do I need one?
A Web Application Firewall (WAF) sits in front of your web applications and filters malicious HTTP/HTTPS traffic — blocking SQL injection, XSS, OWASP Top 10 attacks, bot traffic, and DDoS. If you run any public-facing web app, API, or e-commerce site, you need one.
Cloudflare WAF vs F5 BIG-IP — which should I choose?
Cloudflare for cloud-native, SaaS, and mid-market. It's the easiest to deploy (just a DNS change), includes DDoS protection at no extra cost, and scales infinitely. F5 is better for complex on-prem enterprise apps with custom traffic manipulation needs — but it's 5–10× more expensive and requires F5-certified engineers.
Can a WAF protect against DDoS attacks?
Cloud-based WAFs (Cloudflare, Imperva) absorb L7 DDoS effectively — Cloudflare's network alone handles 100+ Tbps. For L3/L4 DDoS (volumetric attacks), you need upstream scrubbing — Cloudflare Magic Transit, Imperva DDoS Protection, or AWS Shield Advanced. On-prem WAF appliances alone cannot handle large-scale DDoS.
What is API security and WAF API protection?
APIs are now the #1 attack target. API security means validating that API calls match your expected schema (OpenAPI/Swagger), rate limiting, blocking credential stuffing, and enforcing mTLS. Cloudflare API Shield, Check Point CloudGuard WAF, and Imperva all include API-specific protection.
How much does a WAF cost?
Cloudflare Pro is $20/month per domain — extremely cost-effective for SMB. Business tier is $200/month. Enterprise is custom-priced. F5 hardware appliances start at ~$20,000 and require annual subscription + maintenance. FortiWeb appliances run $3,000–$80,000 depending on throughput. Frankly quotes NET pricing on all hardware WAF vendors.
What is WAF-as-code / DevSecOps WAF?
WAF-as-code means defining your WAF security policy in YAML or JSON and deploying it through your CI/CD pipeline — same as any other infrastructure. Check Point CloudGuard WAF supports this natively. This means security keeps up with deployments automatically instead of being a manual bottleneck.

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Frankly quotes NET pricing on Cloudflare, F5, Imperva, and FortiWeb — typically 15–30% below list. Submit your quote and we'll beat it in 48 hours.

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