What should be done if client IP addresses use a different header than the default?

Creating a custom rule is the appropriate course of action when client IP addresses are communicated using a different header than the default. In scenarios where the default configuration does not align with the specific network setup—such as when a reverse proxy or load balancer introduces a custom header—it is essential to adapt the monitoring setup to recognize the correct header. Establishing a custom rule enables Dynatrace to accurately interpret the incoming requests, ensuring that the original client IP addresses are captured effectively.

This approach allows for tailored monitoring that reflects the actual architecture and data flow of the applications, ultimately leading to more accurate analytics and troubleshooting capabilities. By customizing rules specifically for client IP addresses, you can maintain the integrity of the data that Dynatrace relies on for performance monitoring and alerting.