NAXSI vs SiteLock TrueShield
NAXSI and SiteLock TrueShield take different approaches to web application security. Consider your team's expertise and infrastructure preferences when evaluating these options.
NAXSI and SiteLock TrueShield take fundamentally different approaches to web application security. Understanding your infrastructure and team capabilities will help determine which approach fits your needs.
Overview
NAXSI and SiteLock TrueShield are both popular web application firewall solutions. This comparison will help you understand the key differences and choose the right one for your needs.
A lightweight, open source WAF module for NGINX that uses a scoring-based approach instead of signature matching, blocking attacks by detecting suspicious patterns rather than maintaining a vulnerability database.
Cloud-based WAF designed for small businesses and shared hosting, offering simple setup and affordable web application protection.
Quick Comparison
| Feature | NAXSI | SiteLock TrueShield |
|---|---|---|
| Overall Rating | 3.4/5 | 3.0/5 |
| Free Tier | Yes | No |
| Pricing Model | Free (Open Source, GPLv3) | Monthly subscription |
| Ease of Use | 2.8/5 | 4.2/5 |
| Value for Money | 4.5/5 | 3.0/5 |
| Support | 2.5/5 | 3.0/5 |
| Open Source | Yes | No |
| Platforms | NGINX, Linux (Debian, Ubuntu, CentOS), FreeBSD, OpenBSD, NetBSD, Docker | Any web application (DNS-based), cPanel, WordPress, Joomla |
| Compliance | N/A (supports OWASP Top 10 protection patterns) | PCI DSS scanning |
Pricing Comparison
SiteLock TrueShield
Model: Monthly subscription
Basic
From $19.99/month
Pro
From $29.99/month
Business
From $44.99/month
Features Comparison
NAXSI
-
Scoring-Based Detection
Assigns scores to suspicious patterns in requests. Blocks when the cumulative score exceeds a threshold, rather than relying on exact signature matches.
-
Learning Mode
Monitors traffic and automatically generates whitelist rules for legitimate application behavior, reducing manual tuning effort during initial deployment.
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Virtual Patching
Apply custom rules to block specific vulnerabilities without modifying application code. Rules target raw requests or specific fields like headers, args, and body.
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Deny-by-Default
Operates like a DROP firewall. Common attack characters and patterns are blocked unless explicitly whitelisted for the target application.
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Lightweight Footprint
Written in C with only libpcre as a dependency. Adds minimal overhead to NGINX request processing.
-
Dynamic Module Support
Can be compiled as a dynamic NGINX module, allowing it to be loaded without recompiling NGINX from source.
SiteLock TrueShield
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TrueShield WAF
Cloud-based WAF providing OWASP Top 10 protection via DNS redirect.
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Malware Scanning
Daily website scanning for malware, backdoors, and suspicious files.
-
Hosting Provider Integration
Available directly through many hosting control panels.
Which One Is Right for You?
The best WAF depends on your specific requirements, infrastructure, and team expertise.
NAXSI
- You need: Teams already running NGINX who want lightweight inline WAF protection, budget-conscious deployments, applications with predictable request patterns, virtual patching use cases
- You want to start with a free tier
- You prefer open-source solutions
- You're using: NGINX, Linux (Debian, Ubuntu, CentOS), FreeBSD, OpenBSD, NetBSD, Docker
SiteLock TrueShield
- You need: Small businesses on shared hosting, non-technical website owners
- You're using: Any web application (DNS-based), cPanel, WordPress, Joomla
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: NAXSI or SiteLock TrueShield?
NAXSI offers a free tier while SiteLock TrueShield does not, which may be important for early-stage startups. SiteLock TrueShield scores higher for ease of use (4.2/5), which is valuable for smaller teams. Consider your immediate security needs and growth plans when choosing.
Which has better support: NAXSI or SiteLock TrueShield?
SiteLock TrueShield has a higher support rating (3.0/5) compared to NAXSI (2.5/5). 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: NAXSI or SiteLock TrueShield?
SiteLock TrueShield scores higher for ease of use (4.2/5) versus NAXSI (2.8/5). The actual implementation effort depends on your existing infrastructure and team expertise.
Which is more cost-effective: NAXSI or SiteLock TrueShield?
NAXSI offers a free tier while SiteLock TrueShield requires a paid plan. NAXSI scores higher for value (4.5/5). Total cost depends on your traffic volume, required features, and support level needs.
Which is better for WordPress: NAXSI or SiteLock TrueShield?
SiteLock TrueShield explicitly supports WordPress while NAXSI takes a more platform-agnostic approach. For WordPress-specific threats like plugin vulnerabilities and brute force attacks, look for providers with WordPress-specific rule sets.