What is Secure File Transfer Protocol (SFTP)?

Secure File Transfer Protocol (SFTP) is a network protocol used to transfer files securely over an encrypted SSH connection. For teams asking what is a secure ftp, the practical answer is SFTP: a safer replacement for traditional FTP because it protects credentials, commands, and file contents in transit.

How does SFTP work?

SFTP runs over Secure Shell, commonly known as SSH. Instead of sending usernames, passwords, and files in readable text, it creates an encrypted tunnel between the client and the server. Users or applications authenticate with passwords, SSH keys, or both, then upload, download, rename, delete, or manage files through that secure session.

This makes SFTP useful for IT teams handling payroll files, customer records, software packages, backups, logs, and compliance-related data exchanges. Unlike basic FTP, SFTP does not require separate command and data channels, which can simplify firewall rules and reduce exposure.

SFTP vs FTP vs FTPS

Why is SFTP important for businesses?

SFTP helps reduce the risk of credential theft, data interception, unauthorized file access, and accidental exposure during file transfers. It supports stronger authentication, access control, auditability, and encrypted communication.

For regulated industries, SFTP can support broader security and compliance programs by protecting data while it moves between systems. However, SFTP alone does not secure every endpoint involved in the transfer. Devices still need proper configuration, patching, identity controls, and policy enforcement.

How Hexnode supports secure file transfer environments

Hexnode helps IT teams strengthen the endpoint layer around SFTP workflows. With Hexnode, organizations can enforce device encryption, manage certificates, configure Wi-Fi and VPN settings, restrict risky apps, push security policies, and remotely lock or wipe lost devices.

This matters because secure transfer protocols are only as strong as the devices and users accessing them. Hexnode gives IT teams centralized control over laptops, phones, tablets, and rugged devices used to exchange business files.

Common SFTP security best practices

Use SSH keys where possible, disable plain FTP, limit access by role, rotate credentials, monitor file activity, and keep servers patched. IT teams should also restrict unmanaged devices from accessing sensitive transfer systems.