AWS Transfer Family preserves SFTP client source IPs
🔒 AWS Transfer Family now preserves client source IPs using Proxy Protocol v2 (PPv2) when you place a Network Load Balancer (NLB) in front of a VPC-hosted SFTP endpoint. Previously, the NLB's private IP replaced the client's address in logs and during authentication, preventing IP-based auditing and access control. You can enable source IP preservation per server through the console, CLI, or API, and the feature is available in all Regions where AWS Transfer Family is offered.
