ModSecurity Open Source WAF vs Sophos Firewall (XGS)

ModSecurity Open Source WAF and Sophos Firewall (XGS) take different approaches to web application security. Consider your team's expertise and infrastructure preferences when evaluating these options.

View ModSecurity Open Source WAF Review View Sophos Firewall (XGS) Review

ModSecurity Open Source WAF and Sophos Firewall (XGS) take fundamentally different approaches to web application security. Understanding your infrastructure and team capabilities will help determine which approach fits your needs.

Overview

ModSecurity Open Source WAF and Sophos Firewall (XGS) are both popular web application firewall solutions. This comparison will help you understand the key differences and choose the right one for your needs.

The original open source WAF engine powering countless applications, offering unmatched flexibility for those willing to manage their own security infrastructure.

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.

Quick Comparison

Feature ModSecurity Open Source WAF Sophos Firewall (XGS)
Overall Rating 4.0/5 3.8/5
Free Tier Yes Yes
Pricing Model Free (Open Source) Appliance plus subscription (varies by appliance and subscription bundle)
Ease of Use 2.5/5 3.9/5
Value for Money 4.8/5 4.0/5
Support 3.0/5 3.8/5
Open Source Yes No
Platforms Apache, Nginx, IIS, Kubernetes (via Ingress), Docker, any platform via libmodsecurity XGS Series hardware appliances, virtual (VMware, Hyper-V, KVM), software/Home Edition, and cloud (Firewall in AWS and Azure)
Compliance N/A (varies by implementation) Common Criteria, FIPS-validated cryptography (model dependent)

Pricing Comparison

ModSecurity Open Source WAF

Model: Free (Open Source)

Free Tier Available

Community Edition

Free

Commercial Support

Varies by vendor

View full pricing →

Sophos Firewall (XGS)

Model: Appliance plus subscription (varies by appliance and subscription bundle)

Free Tier Available

Home Edition

Free

Xstream Protection (Commercial)

Custom pricing

View full pricing →

Features Comparison

ModSecurity Open Source WAF

  • OWASP Core Rule Set

    Comprehensive, community-maintained rule set providing protection against OWASP Top 10 and more.

  • Custom Rules

    Powerful SecRule language for creating custom detection logic based on any request/response attribute.

  • Real-Time Request Analysis

    Inspect and analyze every HTTP transaction with access to full request and response data.

  • Audit Logging

    Detailed logging of security events for forensics, compliance, and monitoring.

  • Virtual Patching

    Create temporary rules to protect against vulnerabilities while permanent fixes are developed.

  • Data Loss Prevention

    Inspect response bodies to prevent sensitive data leakage.

Sophos Firewall (XGS)

  • 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.

  • Form Hardening

    Signs and validates form fields to prevent manipulation of submitted web forms.

  • URL Hardening

    Restricts accessible URLs based on the learned structure of the protected application.

  • Cookie Signing

    Cryptographically signs cookies to detect and block tampering.

  • Reverse-Proxy Authentication

    Adds basic or form-based authentication policies in front of published web servers via WAF rules.

  • Antivirus Scanning

    Scans uploads and traffic to protected web servers for malware as part of Web Server Protection.

Which One Is Right for You?

The best WAF depends on your specific requirements, infrastructure, and team expertise.

ModSecurity Open Source WAF

  • You need: Security teams with WAF expertise, organizations with strict budget constraints, those needing maximum customization, educational purposes
  • You want to start with a free tier
  • You prefer open-source solutions
  • You're using: Apache, Nginx, IIS, Kubernetes (via Ingress), Docker, any platform via libmodsecurity
Learn more →

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)
Learn more →

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: ModSecurity Open Source WAF or Sophos Firewall (XGS)?

Both ModSecurity Open Source WAF and Sophos Firewall (XGS) offer free tiers, making them accessible for 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: ModSecurity Open Source WAF or Sophos Firewall (XGS)?

Sophos Firewall (XGS) has a higher support rating (3.8/5) compared to ModSecurity Open Source WAF (3.0/5). 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: ModSecurity Open Source WAF or Sophos Firewall (XGS)?

Sophos Firewall (XGS) scores higher for ease of use (3.9/5) versus ModSecurity Open Source WAF (2.5/5). The actual implementation effort depends on your existing infrastructure and team expertise.

Which is more cost-effective: ModSecurity Open Source WAF or Sophos Firewall (XGS)?

Both providers offer free tiers, making it easy to start without commitment. ModSecurity Open Source WAF scores higher for value (4.8/5). Total cost depends on your traffic volume, required features, and support level needs.

Which works better with AWS: ModSecurity Open Source WAF or Sophos Firewall (XGS)?

Sophos Firewall (XGS) explicitly supports AWS while ModSecurity Open Source WAF's AWS integration may vary. Consider whether native AWS integration or cross-cloud portability matters more for your use case.