Azure Web Application Firewall vs Modshield SB
Both Azure Web Application Firewall and Modshield SB are capable WAF solutions. The right choice depends on your specific infrastructure, budget, and feature requirements.
Overview
Azure Web Application Firewall and Modshield SB are both popular web application firewall solutions. This comparison will help you understand the key differences and choose the right one for your needs.
Microsoft's cloud-native WAF integrated with Azure Application Gateway and Front Door, offering enterprise-grade protection with deep Azure ecosystem integration.
ModSecurity-based web application firewall with an intuitive management UI, offering IP reputation filtering, geo-blocking, SIEM integration, and built-in load balancing in a self-hosted virtual appliance.
Quick Comparison
| Feature | Azure Web Application Firewall | Modshield SB |
|---|---|---|
| Overall Rating | 4.2/5 | 3.5/5 |
| Free Tier | No | No |
| Pricing Model | Pay-per-use (gateway hours + data processed) | Subscription-based, per appliance |
| Ease of Use | 3.5/5 | 3.8/5 |
| Value for Money | 3.8/5 | 3.5/5 |
| Support | 4.2/5 | 3.3/5 |
| Platforms | Azure Application Gateway, Azure Front Door, Azure CDN, Azure Spring Apps | Any web application (deployed as reverse proxy VM) |
| Compliance | SOC 1/2/3, PCI DSS, HIPAA, FedRAMP High, ISO 27001, ISO 27018 | OWASP Top 10 coverage, PCI DSS support |
Pricing Comparison
Azure Web Application Firewall
Model: Pay-per-use (gateway hours + data processed)
Application Gateway WAF v2
~$0.443/hour + $0.008/GB
Front Door Standard
$35/month base + usage
Front Door Premium
$330/month base + usage
Modshield SB
Model: Subscription-based, per appliance
Standard
Contact for pricing
Enterprise
Contact for pricing
Features Comparison
Azure Web Application Firewall
-
OWASP Core Rule Set
Pre-configured protection against OWASP Top 10 vulnerabilities with regularly updated rule sets.
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Custom Rules
Create custom rules based on geo-location, IP address, request attributes, and rate limiting.
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Bot Protection
Managed bot protection ruleset to detect and mitigate malicious bot traffic (Premium tier).
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Per-Site Policies
Apply different WAF policies to different sites behind the same gateway.
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Exclusion Lists
Fine-tune rules by excluding specific request attributes to reduce false positives.
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Geo-Filtering
Allow or block traffic based on country/region of origin.
Modshield SB
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ModSecurity Engine
Built on the proven ModSecurity WAF engine with full OWASP Core Rule Set compatibility.
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IP Reputation Filtering
Automatically block traffic from known malicious IP addresses using continuously updated threat intelligence feeds.
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Geo-Blocking
Country-level blacklisting and whitelisting to restrict access based on geographic origin.
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SIEM Integration
Forward security logs to external SIEM systems like Splunk and Elasticsearch for centralized monitoring.
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Built-in Load Balancer
Integrated load balancing distributes traffic across multiple backend servers without additional infrastructure.
-
Compliance Metrics
Built-in compliance reporting and dashboards to help meet regulatory requirements.
Which One Is Right for You?
The best WAF depends on your specific requirements, infrastructure, and team expertise.
Azure Web Application Firewall
- You need: Azure-native applications, Microsoft enterprise customers, government and regulated industries, global applications needing edge protection
- You're using: Azure Application Gateway, Azure Front Door, Azure CDN, Azure Spring Apps
Modshield SB
- You need: Organizations wanting managed ModSecurity with a GUI, self-hosted WAF requirements, compliance-focused deployments
- You're using: Any web application (deployed as reverse proxy VM)
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 has better support: Azure Web Application Firewall or Modshield SB?
Azure Web Application Firewall has a higher support rating (4.2/5) compared to Modshield SB (3.3/5). 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: Azure Web Application Firewall or Modshield SB?
Modshield SB scores higher for ease of use (3.8/5) versus Azure Web Application Firewall (3.5/5). The actual implementation effort depends on your existing infrastructure and team expertise.
Which is more cost-effective: Azure Web Application Firewall or Modshield SB?
Neither provider offers a completely free tier. Azure Web Application Firewall scores higher for value (3.8/5). Total cost depends on your traffic volume, required features, and support level needs.
Which is better for enterprise: Azure Web Application Firewall or Modshield SB?
Azure Web Application Firewall is positioned for enterprise use cases, while Modshield SB may be more suited for small to mid-market organizations. Enterprise buyers should evaluate SLAs, support options, and integration capabilities.