Reply To: NLB Client IP preservation vs Proxy protocol V2

[jersyogg]

Client IP Preservation lets your backend see the real client IP without extra setup, and it works by default on AWS NLB for TCP targets. Proxy Protocol V2 adds a header with client info but requires your backend to support parsing it. Use Client IP Preservation when possible and enable Proxy Protocol only if needed (e.g., cross-VPC).