A. If the end user is requesting behind a proxy server then the user should not enable a proxy protocol on ELB
B. ELB does not support a proxy protocol when it is listening on both the load balancer and the back-end instances
C. Whether the end user is requesting from a proxy server or directly, it does not make a difference for the proxy protocol
D. If the end user is requesting behind the proxy, then the user should add the ג€isproxyג€ flag to the ELB Configuration