Question

A company is deploying a new financial trading application in the cloud. The application backend performs IP-based allow-listing and requires the original client source IP address to be visible for its logging and fraud-detection modules. It also handles millions of concurrent TCP connections and demands ultra-low latency at Layer 4. Which load balancing configuration best meets these deployment requirements?

Accepted Answer

Deploy a Layer 4 network load balancer that preserves the client source IP and passes TCP traffic through without terminating connections

Answer

Deploy a Layer 7 application load balancer and enable HTTP header inspection to route requests based on hostname

Answer

Deploy a Layer 7 application load balancer and rely on the X-Forwarded-For header to relay the original client IP to the backend

Answer

Deploy a Layer 4 network load balancer with source NAT enabled so all backend traffic appears to originate from the load balancer