CrowdSec Web Application Firewall vs Tempesta FW
CrowdSec Web Application Firewall and Tempesta FW take different approaches to web application security. Consider your team's expertise and infrastructure preferences when evaluating these options.
CrowdSec Web Application Firewall and Tempesta FW take fundamentally different approaches to web application security. Understanding your infrastructure and team capabilities will help determine which approach fits your needs.
Overview
CrowdSec Web Application Firewall and Tempesta FW are both popular web application firewall solutions. This comparison will help you understand the key differences and choose the right one for your needs.
Open-source, crowd-powered WAF that combines traditional rule-based filtering with community-driven threat intelligence. Integrates with Nginx, Traefik, HAProxy, and Kubernetes. Compatible with ModSecurity SecLang rules.
High-performance open-source WAF and web accelerator built directly into the Linux kernel, delivering up to 1.8M requests per second with integrated L3-L7 DDoS protection and automated bot mitigation via WebShield.
Quick Comparison
| Feature | CrowdSec Web Application Firewall | Tempesta FW |
|---|---|---|
| Overall Rating | 4.3/5 | 4.0/5 |
| Free Tier | Yes | Yes |
| Pricing Model | Open source (MIT) + commercial blocklists and CTI | Free (open source) + professional services |
| Ease of Use | - | 2.5/5 |
| Value for Money | 4.7/5 | 4.8/5 |
| Support | - | 3.0/5 |
| Open Source | No | Yes |
| Platforms | Linux, Docker, Kubernetes, FreeBSD, Windows (beta) | Linux (kernel-level integration), bare metal, cloud VMs |
| Compliance | Supports PCI DSS compliance, SOC 2 workflows | Contact vendor |
Pricing Comparison
CrowdSec Web Application Firewall
Model: Open source (MIT) + commercial blocklists and CTI
Free Tier AvailableCommunity
Free
Premium Blocklists
From $900/month
CTI
Custom
Tempesta FW
Model: Free (open source) + professional services
Free Tier AvailableOpen Source
Free
Professional Services
Contact for pricing
Features Comparison
CrowdSec Web Application Firewall
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Crowd-Sourced Threat Intelligence
Network of 200,000+ installations sharing attack signals in real-time. Blocks malicious IPs 7-60 days before other vendors detect them.
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ModSecurity Rule Compatibility
Load existing ModSecurity SecLang rules directly. Teams migrating from ModSecurity can reuse their rule sets without rewriting.
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Virtual Patching
Block exploitation attempts at the WAF layer before application patches are deployed. Protect against known CVEs without code changes.
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Advanced Behavior Detection
Goes beyond single-request analysis. Generates internal events to build complex multi-request scenarios before triggering blocks.
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Proxy Integration
Native integration with Nginx, Traefik, HAProxy, Apache, and Envoy. No separate appliance needed.
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Kubernetes Ready
Runs as a sidecar or within ingress controllers. Fits containerized and microservice architectures.
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Console Dashboard
Web-based management console for monitoring alerts, managing blocklists, and configuring the security engine.
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Community Blocklists
Free access to crowd-sourced IP blocklists updated in real-time from the CrowdSec network.
Tempesta FW
-
Kernel-Level Performance
Built directly into Linux TCP/IP stack, processing up to 1.8M HTTP requests per second - 3x faster than Nginx or HAProxy.
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Multi-Layer DDoS Protection
Integrated protection against volumetric and application-layer DDoS attacks with rate limiting, JavaScript challenges, and adaptive QoS.
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HTTP Tables
Extends Linux iptables/nftables for application-layer filtering, enabling rules that combine IP addresses with HTTP headers and content.
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Intelligent Load Balancing
Machine learning-powered load balancing with persistent sessions, weighted round-robin, and rendezvous hashing strategies.
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Web Acceleration
Built-in caching using Tempesta DB, an ultra-fast in-memory database with NUMA-aware distribution and SIMD optimizations.
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High-Performance TLS
Tempesta TLS is 40-80% faster than Nginx/OpenSSL with 4x lower latency for TLS handshakes.
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Bot Protection (WebShield)
Open-source automated bot protection via WebShield — detects and blocks DDoS bots, scrapers, shopping bots, and booking bots using TLS and HTTP fingerprint analysis on access logs stored in ClickHouse.
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Volumetric DDoS Protection
Upcoming open-source volumetric DDoS protection solution, completing a full L3-L7 DDoS and bot mitigation stack when combined with Tempesta FW's application-layer defences and WebShield.
-
Native XDP Integration
Uses Linux XDP (eXpress Data Path) for early packet dropping, enabling efficient mitigation of volumetric attacks.
Which One Is Right for You?
The best WAF depends on your specific requirements, infrastructure, and team expertise.
CrowdSec Web Application Firewall
- You want to start with a free tier
- You're using: Linux, Docker, Kubernetes, FreeBSD, Windows (beta)
Tempesta FW
- You need: High-traffic sites requiring maximum performance, organizations with Linux expertise, teams wanting to replace multiple infrastructure components, performance-critical applications
- You want to start with a free tier
- You prefer open-source solutions
- You're using: Linux (kernel-level integration), bare metal, cloud VMs
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: CrowdSec Web Application Firewall or Tempesta FW?
Both CrowdSec Web Application Firewall and Tempesta FW offer free tiers, making them accessible for startups. Consider your immediate security needs and growth plans when choosing.
Which is more cost-effective: CrowdSec Web Application Firewall or Tempesta FW?
Both providers offer free tiers, making it easy to start without commitment. Tempesta FW scores higher for value (4.8/5). Total cost depends on your traffic volume, required features, and support level needs.
What's the difference between Tempesta FW (open source) and CrowdSec Web Application Firewall (commercial)?
Tempesta FW is open source, which means you can inspect the code, customize it, and self-host without licensing fees. CrowdSec Web Application Firewall is a commercial solution with managed support and regular updates. Open source is ideal if you have in-house expertise and want full control. Commercial solutions are better if you prefer managed security with vendor support.