F5 WAF for NGINX vs Solid Security (formerly iThemes Security)
F5 WAF for NGINX and Solid Security (formerly iThemes Security) take different approaches to web application security. Consider your team's expertise and infrastructure preferences when evaluating these options.
F5 WAF for NGINX and Solid Security (formerly iThemes Security) take fundamentally different approaches to web application security. Understanding your infrastructure and team capabilities will help determine which approach fits your needs.
Overview
F5 WAF for NGINX and Solid Security (formerly iThemes Security) are both popular web application firewall solutions. This comparison will help you understand the key differences and choose the right one for your needs.
Lightweight, high-performance WAF running natively inside NGINX Plus. Brings F5's enterprise threat intelligence to DevOps workflows with declarative configuration, Kubernetes-native deployment, and CI/CD integration. Part of the NGINX One platform.
Comprehensive WordPress security plugin with Patchstack-powered firewall rules, virtual patching, two-factor authentication, and site scanning for proactive protection.
Quick Comparison
| Feature | F5 WAF for NGINX | Solid Security (formerly iThemes Security) |
|---|---|---|
| Overall Rating | 4.2/5 | 4.1/5 |
| Free Tier | No | Yes |
| Pricing Model | Per-instance annual subscription | Freemium (Free tier + annual Pro license) |
| Ease of Use | 3.8/5 | 4.3/5 |
| Value for Money | 3.5/5 | 4.2/5 |
| Support | 4.3/5 | 4.0/5 |
| Open Source | No | Yes |
| Platforms | NGINX Plus (Linux), NGINX Ingress Controller (Kubernetes), Docker, AWS, Azure (native NGINXaaS), GCP, any NGINX Plus-supported environment | WordPress (self-hosted) |
| Compliance | SOC 2, PCI DSS, HIPAA (via F5 compliance), FIPS 140-2 (NGINX Plus) | Contact vendor |
Pricing Comparison
F5 WAF for NGINX
Model: Per-instance annual subscription
NGINX Plus
Starting $2,500/instance/year
F5 WAF for NGINX (add-on)
~$2,000/instance/year
NGINX One Premium
Custom pricing
NGINX as a Service (Azure)
Usage-based
Solid Security (formerly iThemes Security)
Model: Freemium (Free tier + annual Pro license)
Free Tier AvailableFree
$0
Pro (1 site)
$99/year (~$8.25/month)
Pro (multi-site)
From $199/year
Features Comparison
F5 WAF for NGINX
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7,800+ Attack Signatures
F5's comprehensive threat signature database with continuous updates from F5's threat research team. Covers OWASP Top 10, CVE-specific signatures, and application-specific attack patterns.
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Declarative Security Policies
WAF policies defined in JSON or YAML, designed for version control and CI/CD integration. Security-as-code approach where policies deploy alongside application code through the same pipelines.
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API Security
Import OpenAPI/Swagger specifications to automatically enforce API contracts. Schema validation, parameter type checking, and rate limiting for REST, GraphQL, and gRPC APIs. Blocks requests that violate the API specification.
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ML-Powered DoS Protection
Behavioral analytics using machine learning to detect and mitigate Layer 7 denial-of-service attacks. Learns normal traffic patterns and automatically identifies anomalous request rates, slow POST attacks, and resource exhaustion attempts.
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Bot Protection
Multi-layered bot detection combining signature matching, anomaly detection, and behavioral analysis. Identifies credential stuffing bots, web scrapers, and automated vulnerability scanners.
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Kubernetes Ingress WAF
Native WAF support in the NGINX Ingress Controller. Attach WAF policies to specific ingress resources for per-service or per-route security. Policies managed through Kubernetes CRDs and annotations.
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NGINX One Visual Editor
The NGINX One console provides a GUI-based WAF policy editor, replacing the original CLI-only configuration. Security teams can create, modify, and monitor WAF policies through a web interface without writing JSON.
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Request and Response Inspection
Inspects both incoming requests and outgoing responses. Response inspection catches data leakage, error messages that reveal application internals, and sensitive data exposure.
Solid Security (formerly iThemes Security)
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Patchstack Firewall
Virtual patching rules powered by Patchstack that protect against known plugin and theme vulnerabilities automatically.
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Two-Factor Authentication
Multiple 2FA methods including authenticator apps, email codes, and backup codes for all user roles.
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Passwordless Login
Login via passkeys and biometrics, eliminating password-based attacks entirely (Pro feature).
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Site Scanner
Checks for known malware, vulnerabilities in plugins and themes, and blocklist status.
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File Change Detection
Monitors WordPress core files and alerts when unexpected changes are detected.
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Security Dashboard
Unified dashboard showing security status, recent events, and actionable recommendations.
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Trusted Devices
Recognizes trusted devices and restricts admin access from unknown devices (Pro feature).
Which One Is Right for You?
The best WAF depends on your specific requirements, infrastructure, and team expertise.
F5 WAF for NGINX
- You need: Organizations already running NGINX Plus, Kubernetes deployments using NGINX Ingress Controller, DevOps teams wanting WAF-as-code in CI/CD pipelines, microservice architectures needing per-service WAF policies, teams wanting F5 security without BIG-IP complexity
- You're using: NGINX Plus (Linux), NGINX Ingress Controller (Kubernetes), Docker, AWS, Azure (native NGINXaaS), GCP, any NGINX Plus-supported environment
Solid Security (formerly iThemes Security)
- You need: WordPress agencies managing multiple sites, users wanting modern authentication features like passkeys, sites needing automatic virtual patching for plugin vulnerabilities
- You want to start with a free tier
- You prefer open-source solutions
- You're using: WordPress (self-hosted)
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: F5 WAF for NGINX or Solid Security (formerly iThemes Security)?
Solid Security (formerly iThemes Security) offers a free tier while F5 WAF for NGINX does not, making Solid Security (formerly iThemes Security) more accessible for budget-conscious startups. Solid Security (formerly iThemes Security) scores higher for ease of use (4.3/5), which is valuable for smaller teams. Consider your immediate security needs and growth plans when choosing.
Which has better support: F5 WAF for NGINX or Solid Security (formerly iThemes Security)?
F5 WAF for NGINX has a higher support rating (4.3/5) compared to Solid Security (formerly iThemes Security) (4.0/5). 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: F5 WAF for NGINX or Solid Security (formerly iThemes Security)?
Solid Security (formerly iThemes Security) scores higher for ease of use (4.3/5) versus F5 WAF for NGINX (3.8/5). The actual implementation effort depends on your existing infrastructure and team expertise.
Which is more cost-effective: F5 WAF for NGINX or Solid Security (formerly iThemes Security)?
Solid Security (formerly iThemes Security) offers a free tier while F5 WAF for NGINX requires a paid plan. Solid Security (formerly iThemes Security) scores higher for value (4.2/5). Total cost depends on your traffic volume, required features, and support level needs.
Which is better for WordPress: F5 WAF for NGINX or Solid Security (formerly iThemes Security)?
Solid Security (formerly iThemes Security) explicitly supports WordPress while F5 WAF for NGINX 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.