Sophos Firewall (XGS) vs Zscaler Internet Access (ZIA) WAF
Both Sophos Firewall (XGS) and Zscaler Internet Access (ZIA) WAF are capable WAF solutions. The right choice depends on your specific infrastructure, budget, and feature requirements.
Overview
Sophos Firewall (XGS) and Zscaler Internet Access (ZIA) 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.
Next-gen firewall (SFOS on XGS appliances) with a built-in reverse-proxy Web Application Firewall via its Web Server Protection module; the active successor to the end-of-life Sophos UTM.
Enterprise zero trust security platform with integrated cloud WAF capabilities as part of Zscaler Internet Access. Inspects all traffic including encrypted SSL/TLS at cloud scale.
Quick Comparison
| Feature | Sophos Firewall (XGS) | Zscaler Internet Access (ZIA) WAF |
|---|---|---|
| Overall Rating | 3.8/5 | 3.8/5 |
| Free Tier | Yes | No |
| Pricing Model | Appliance plus subscription (varies by appliance and subscription bundle) | Per user / Annual subscription |
| Ease of Use | 3.9/5 | 3.2/5 |
| Value for Money | 4.0/5 | 3.0/5 |
| Support | 3.8/5 | 4.0/5 |
| Platforms | XGS Series hardware appliances, virtual (VMware, Hyper-V, KVM), software/Home Edition, and cloud (Firewall in AWS and Azure) | Cloud (SaaS) |
| Compliance | Common Criteria, FIPS-validated cryptography (model dependent) | SOC 2, ISO 27001, FedRAMP, HIPAA, PCI DSS, GDPR |
Pricing Comparison
Sophos Firewall (XGS)
Model: Appliance plus subscription (varies by appliance and subscription bundle)
Free Tier AvailableHome Edition
Free
Xstream Protection (Commercial)
Custom pricing
Zscaler Internet Access (ZIA) WAF
Model: Per user / Annual subscription
ZIA Business
Custom pricing
ZIA Transformation
Custom pricing
Features Comparison
Sophos Firewall (XGS)
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Reverse-Proxy WAF
Apache-based reverse proxy that protects published web servers against SQL injection, cross-site scripting, directory traversal, and other common web attacks.
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Form Hardening
Signs and validates form fields to prevent manipulation of submitted web forms.
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URL Hardening
Restricts accessible URLs based on the learned structure of the protected application.
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Cookie Signing
Cryptographically signs cookies to detect and block tampering.
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Reverse-Proxy Authentication
Adds basic or form-based authentication policies in front of published web servers via WAF rules.
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Antivirus Scanning
Scans uploads and traffic to protected web servers for malware as part of Web Server Protection.
Zscaler Internet Access (ZIA) WAF
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Inline WAF Protection
Inspects web traffic inline for OWASP Top 10 threats as part of the broader ZIA security stack.
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Full SSL/TLS Inspection
Decrypts, inspects, and re-encrypts all encrypted traffic at cloud scale without performance degradation.
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AI-Powered Threat Detection
Machine learning models analyze traffic patterns to detect zero-day threats and advanced attacks.
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Cloud Firewall
Stateful inspection firewall for all ports and protocols, extending protection beyond HTTP/S traffic.
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Centralized Policy Management
Single console for global security policy enforcement across 150+ data centers.
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Zero Trust Architecture
Identity-based access control ensuring users only reach authorized applications regardless of location.
Which One Is Right for You?
The best WAF depends on your specific requirements, infrastructure, and team expertise.
Sophos Firewall (XGS)
- You need: Organizations already running Sophos Firewall, businesses wanting WAF and network security in one appliance, home labs and educational users via the free Home Edition
- You want to start with a free tier
- You're using: XGS Series hardware appliances, virtual (VMware, Hyper-V, KVM), software/Home Edition, and cloud (Firewall in AWS and Azure)
Zscaler Internet Access (ZIA) WAF
- You need: Large enterprises adopting zero trust, organizations wanting a single vendor for all web security, companies with distributed workforces needing consistent global security policy
- You're using: Cloud (SaaS)
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: Sophos Firewall (XGS) or Zscaler Internet Access (ZIA) WAF?
Sophos Firewall (XGS) offers a free tier while Zscaler Internet Access (ZIA) WAF does not, which may be important for early-stage startups. Sophos Firewall (XGS) scores higher for ease of use (3.9/5), which is valuable for smaller teams. Consider your immediate security needs and growth plans when choosing.
Which has better support: Sophos Firewall (XGS) or Zscaler Internet Access (ZIA) WAF?
Zscaler Internet Access (ZIA) WAF has a higher support rating (4.0/5) compared to Sophos Firewall (XGS) (3.8/5). 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: Sophos Firewall (XGS) or Zscaler Internet Access (ZIA) WAF?
Sophos Firewall (XGS) scores higher for ease of use (3.9/5) versus Zscaler Internet Access (ZIA) WAF (3.2/5). The actual implementation effort depends on your existing infrastructure and team expertise.
Which is more cost-effective: Sophos Firewall (XGS) or Zscaler Internet Access (ZIA) WAF?
Sophos Firewall (XGS) offers a free tier while Zscaler Internet Access (ZIA) WAF requires a paid plan. Sophos Firewall (XGS) scores higher for value (4.0/5). Total cost depends on your traffic volume, required features, and support level needs.
Which works better with AWS: Sophos Firewall (XGS) or Zscaler Internet Access (ZIA) WAF?
Sophos Firewall (XGS) explicitly supports AWS while Zscaler Internet Access (ZIA) WAF's AWS integration may vary. Consider whether native AWS integration or cross-cloud portability matters more for your use case.