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Coraza Web Application Firewall vs ModSecurity Open Source WAF

Both Coraza Web Application Firewall and ModSecurity Open Source WAF are capable WAF solutions. The right choice depends on your specific infrastructure, budget, and feature requirements.

View Coraza Web Application Firewall Review View ModSecurity Open Source WAF Review

Overview

Coraza Web Application Firewall and ModSecurity Open Source WAF are both popular web application firewall solutions. This comparison will help you understand the key differences and choose the right one for your needs.

OWASP open source WAF written in Go, fully compatible with ModSecurity rules and OWASP Core Rule Set, designed as a modern alternative to ModSecurity with native support for Caddy, Traefik, and HAProxy.

The original open source WAF engine powering countless applications, offering unmatched flexibility for those willing to manage their own security infrastructure.

Quick Comparison

Feature Coraza Web Application Firewall ModSecurity Open Source WAF
Overall Rating 4.2/5 4.0/5
Free Tier Yes Yes
Pricing Model Free and open source (Apache 2.0) Free (Open Source)
Ease of Use 3.8/5 2.5/5
Value for Money 4.8/5 4.8/5
Support 3.5/5 3.0/5
Open Source Yes Yes
Platforms Any platform running Go, Docker, Kubernetes, Linux, macOS, Windows Apache, Nginx, IIS, Kubernetes (via Ingress), Docker, any platform via libmodsecurity
Compliance Supports PCI DSS compliance when configured with OWASP CRS N/A (varies by implementation)

Pricing Comparison

Coraza Web Application Firewall

Model: Free and open source (Apache 2.0)

Free Tier Available

Open Source

Free

View full pricing →

ModSecurity Open Source WAF

Model: Free (Open Source)

Free Tier Available

Community Edition

Free

Commercial Support

Varies by vendor

View full pricing →

Features Comparison

Coraza Web Application Firewall

  • ModSecurity Compatibility

    Full compatibility with ModSecurity SecLang rule language. Existing ModSecurity rules and rule sets work without modification.

  • OWASP CRS Support

    Native support for the OWASP Core Rule Set, providing protection against SQL injection, XSS, RCE, and other OWASP Top 10 threats.

  • Go Native

    Pure Go implementation with no C dependencies. Embeddable as a library, usable as middleware, or deployable as a plugin for modern proxies.

  • Proxy Plugins

    Official plugins for Caddy (coraza-caddy), Traefik, and HAProxy allow adding WAF protection with minimal configuration.

  • Kubernetes Ready

    Lightweight enough to run as a sidecar or embedded in ingress controllers. Works with any Go-based K8s tooling.

  • Audit Logging

    Detailed audit logging of blocked and flagged requests for security analysis and compliance reporting.

ModSecurity Open Source WAF

  • OWASP Core Rule Set

    Comprehensive, community-maintained rule set providing protection against OWASP Top 10 and more.

  • Custom Rules

    Powerful SecRule language for creating custom detection logic based on any request/response attribute.

  • Real-Time Request Analysis

    Inspect and analyze every HTTP transaction with access to full request and response data.

  • Audit Logging

    Detailed logging of security events for forensics, compliance, and monitoring.

  • Virtual Patching

    Create temporary rules to protect against vulnerabilities while permanent fixes are developed.

  • Data Loss Prevention

    Inspect response bodies to prevent sensitive data leakage.

Which One Is Right for You?

The best WAF depends on your specific requirements, infrastructure, and team expertise.

Coraza Web Application Firewall

  • You need: Teams migrating from ModSecurity, Kubernetes environments, Go-based applications, organizations using Caddy or Traefik, developers wanting embeddable WAF
  • You want to start with a free tier
  • You prefer open-source solutions
  • You're using: Any platform running Go, Docker, Kubernetes, Linux, macOS, Windows
Learn more →

ModSecurity Open Source WAF

  • You need: Security teams with WAF expertise, organizations with strict budget constraints, those needing maximum customization, educational purposes
  • You want to start with a free tier
  • You prefer open-source solutions
  • You're using: Apache, Nginx, IIS, Kubernetes (via Ingress), Docker, any platform via libmodsecurity
Learn more →

We recommend evaluating both options with a trial or free tier before committing. Consider your existing infrastructure, team expertise, compliance requirements, and budget.

Frequently Asked Questions

Which is better for startups: Coraza Web Application Firewall or ModSecurity Open Source WAF?

Both Coraza Web Application Firewall and ModSecurity Open Source WAF offer free tiers, making them accessible for startups. Coraza Web Application Firewall scores higher for ease of use (3.8/5), which is valuable for smaller teams. Consider your immediate security needs and growth plans when choosing.

Which has better support: Coraza Web Application Firewall or ModSecurity Open Source WAF?

Coraza Web Application Firewall has a higher support rating (3.5/5) compared to ModSecurity Open Source WAF (3.0/5). However, support quality can vary based on your plan tier - enterprise customers typically receive more responsive support from both providers. Consider evaluating support during a trial period.

Which is easier to implement: Coraza Web Application Firewall or ModSecurity Open Source WAF?

Coraza Web Application Firewall scores higher for ease of use (3.8/5) versus ModSecurity Open Source WAF (2.5/5). The actual implementation effort depends on your existing infrastructure and team expertise.

Which is more cost-effective: Coraza Web Application Firewall or ModSecurity Open Source WAF?

Both providers offer free tiers, making it easy to start without commitment. Total cost depends on your traffic volume, required features, and support level needs.