Getting Orgin IP From Load Balancer

Question

Is there a way to get the origin IP of the user from the HTTP load balancing w/ GCloud? We are currently using just Network Load Balancing, and are needing to move to a cross region balancer although we need to user's IP for compliance and logging.

Does it pass in a header or something along those lines?

Thanks ~Z

Answer 1

The documentation (https://cloud.google.com/compute/docs/load-balancing/http/) says it's the first IP address of the X-Forwarded-For header.

  X-Forwarded-For: <client IP(s)>, <global forwarding rule external IP>