ModSecurity vs Cloudflare
A detailed comparison to help you choose between ModSecurity and Cloudflare.
ModSecurity Open-source web application firewall for Apache, Nginx, and IIS | Cloudflare Global CDN and DDoS protection with object storage | |
|---|---|---|
| Overview | ||
| Rating | 4.0 (250 reviews) | 4.4 (122 reviews)✓ |
| Pricing model | free | freemium |
| Starting price | Free | Free tier available |
| Best for | DevOps teams and system administrators running self-managed web servers who need application-layer protection without managed WAF costs. | Teams building web applications requiring global distribution, DDoS protection, and cost-efficient object storage without egress fees. |
| Specifications (entry plan) | ||
| CPU cores | — | 0 vCPU |
| RAM | — | 0 GB |
| Storage | — | 0 GB |
| Bandwidth | — | 0 TB/mo |
| SLA uptime | — | 99.99% |
| Data-center count | — | 300 |
| Features | ||
| IPv6 | ✓ | |
| DDoS protection | ✓ | |
| Automated backups | ||
| Snapshots | ||
| Managed option | ||
| Bare metal | ||
| GPU available | ||
| S3-compatible | ||
| Hourly billing | ||
| Free tier | ✓ | |
| Data-center locations | ||
| Regions | — | Global — 300+ cities |
| Tags | ||
| Tags | free tieropen sourceself hostable | free tiers3 compatibleddos protectioneu datacenterus datacenterapac datacenterapi accessipv6terraform provider |
| Visit ModSecurity → | Visit Cloudflare → | |
ModSecurity
Pros
- + Deploy on-premises with full control and visibility
- + Use industry-standard OWASP Core Rule Set or create custom rules
- + Inspect request/response payloads, headers, and cookies in real-time
- + Free and open-source with active community support
Cons
- - Requires server-level integration and maintenance expertise
- - Rule tuning needed to avoid false positives in production
- - No built-in DDoS rate-limiting or volumetric attack mitigation
Cloudflare
Pros
- + Remove egress fees with R2 object storage pricing model
- + Deploy content globally with automatic edge caching
- + Mitigate DDoS attacks with Anycast network
- + Integrate security and performance in one platform
Cons
- - R2 has limited regional availability compared to AWS S3
- - Steeper learning curve for complex configuration options
- - Egress costs still apply for some traffic patterns outside R2
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