Route-Based Dynamic Response Header Manipulation and Security Injection

This command configures dynamic HTTP response header manipulation rules inside Nginx Unit's routing pipeline. Unit modifies outbound HTTP headers before returning responses to the client, adding strict security headers like Content-Security-Policy, HTTP Strict Transport Security HSTS, and CORS policy headers across matching route patterns.

This approach is essential for enforcing centralized security governance and compliance standards across heterogeneous backend applications without modifying underlying application source code or installing third-party middleware packages.

Processing header additions at the native C runtime level minimizes processing latency compared to application-level middleware. Administrators must verify that downstream backend applications do not emit conflicting header keys to prevent duplicate HTTP response header delivery to end-user clients.

> System.Execute()

curl -X PUT -d '{
  "match": {
    "uri": "/api/*"
  },
  "action": {
    "pass": "applications/api_backend",
    "response_headers": {
      "Strict-Transport-Security": "max-age=31536000; includeSubDomains",
      "X-Content-Type-Options": "nosniff",
      "X-Frame-Options": "DENY",
      "Access-Control-Allow-Origin": "https://app.example.com"
    }
  }
}' --unix-socket /var/run/control.unit.sock http://localhost/config/routes/secured_api_route

> Architecture & Security Context

Verified for Valters IT Hub. When deploying this configuration in a production homelab or enterprise environment, ensure that you monitor system resources and implement strict access controls. Administrator privileges are required.

ID: VALTERSIT-5B9F5CD68673