SFTP Connection Tester
Test SFTP server connectivity with password or key-based authentication and view detailed connection results.
Coming Soon
This tool is currently under development. In the meantime, download FTPie to connect and test your SFTP servers directly.
Download FTPie FreeWhat is SFTP?
SFTP (SSH File Transfer Protocol) is a secure file transfer protocol that runs over SSH on port 22. Unlike plain FTP, all data — including credentials and file contents — is encrypted in transit. It supports both password and public-key authentication.
Common SFTP connection issues
- Host key mismatch — the server's host key has changed, which may indicate a MITM attack or server reinstall.
- Permission denied — wrong credentials or public key not added to
~/.ssh/authorized_keys. - Connection timeout — port 22 is blocked by a firewall, or the server is down.
- Subsystem failure — the SFTP subsystem is not enabled in the SSH server configuration.