OpenSSH SFTP server

The software implements the SFTP server component of the OpenSSH suite, providing a secure file‑transfer service over the SSH protocol. It encrypts all data in transit, protecting against eavesdropping, connection hijacking, and related attacks, while supporting the authentication mechanisms and configuration options available in OpenSSH. As a server‑side daemon, it works alongside sshd and other OpenSSH tools to enable remote file operations such as uploading, downloading, and directory management.

It is intended for users who need a reliable, self‑hostable solution for secure file exchange, including system administrators, developers, and organizations that run their own infrastructure. The server can be deployed on any system that supports OpenSSH, and it integrates with the broader OpenSSH ecosystem, allowing consistent key management and tunneling capabilities across SSH, SCP, and SFTP sessions.

The implementation is released under the BSD‑2‑Clause license, is open source, and is provided without subscription or tiered pricing. It is maintained by developers from the OpenBSD Project and is considered a stable component of the OpenSSH distribution.