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HAProxy Config Validator

Validate HAProxy SSL/TLS configuration for security issues

About HAProxy SSL Validation

HAProxy is a widely used load balancer and reverse proxy that handles SSL/TLS termination for many production environments. Misconfiguring HAProxy's SSL settings can expose your infrastructure to protocol downgrade attacks, weak cipher usage, and certificate validation failures. Our HAProxy Config Validator analyzes your configuration directives and flags potential security issues before they reach production.

How to Use

  1. Copy your HAProxy configuration snippet containing the SSL/TLS bind directives.
  2. Paste the configuration into the text area provided.
  3. Click Validate to analyze the configuration for security issues.
  4. Review each flagged issue and follow the suggested fixes to harden your setup.

Use Cases

  • Pre-Deployment Review: Validate HAProxy SSL configuration before deploying to production environments.
  • Security Audits: Quickly audit existing HAProxy configurations for compliance with security policies.
  • Migration Support: Verify SSL settings when upgrading HAProxy versions or migrating between servers.
  • Learning Tool: Understand HAProxy SSL best practices by seeing real-time validation feedback.

Frequently Asked Questions

The validator checks for weak TLS protocol versions, deprecated cipher suites, missing SSL options like no-sslv3, certificate path issues, and other common HAProxy SSL misconfigurations that could lead to security vulnerabilities.
Minimum requirements include disabling SSLv3 and TLS 1.0/1.1, using strong cipher suites, enabling OCSP stapling, and specifying a modern ssl-min-ver setting. HAProxy 2.0+ supports TLS 1.3 which is strongly recommended.
Yes, you can paste your entire haproxy.cfg file. The validator will extract and analyze all SSL-related bind directives and frontend/backend configurations, providing a comprehensive security report.

Tips & Best Practices

  • Validate HAProxy SSL configuration before applying changes
  • Check HAProxy-specific SSL directives and options
  • Monitor HAProxy SSL performance after configuration changes
  • Use HAProxy stats to monitor SSL connection metrics

Technical Details

Config: HAProxy SSL/TLS configuration validation
Directives: ssl-default-bind-ciphers, ssl-default-bind-options
Features: SNI, OCSP stapling, and SSL termination
Output: HAProxy SSL configuration analysis and recommendations