AWS introduced functionality allowing administrators of AWS Transfer Family public SFTP servers to configure up to three custom ports, including port 22 and any ports in the 2000–65535 range. Each port can be assigned either a client-first or server-first communication mode, addressing compatibility challenges with diverse SFTP clients and connection behaviors.
This flexibility allows businesses to comply with network requirements, accommodate client-specific connection protocols, and reduce unwanted automated connection attempts targeting the default port 22. The feature is supported across all AWS Regions offering public SFTP server capabilities and is accessible via AWS Console, CLI, and SDKs.
Source & further reading
AWS Transfer Family supports custom ports for public SFTP servers ↗Source published 2026-10-12. This report was prepared with AI assistance from the linked primary-source material. Claims and limitations should be checked against the original announcement or research.