SFTP Connection Tester

This tool performs a real SSH/SFTP handshake to your server, including key exchange and authentication. It supports both password and SSH private key authentication, and reports the server’s SSH software version string and the round-trip time.

Credentials and private keys are transmitted securely to our testing API and are never stored or logged. If you prefer not to test with real credentials, leave username and password blank - the tool will attempt an anonymous connection and report whether the server is reachable.

For private key authentication, paste the PEM content of your key into the text area. Both OpenSSH and RSA key formats are supported. If your key is protected with a passphrase, enter it in the passphrase field.

Connection checks out? If you're also looking for a full SFTP client for Windows - with SSH key authentication, host-key verification and in-place remote editing - that's what FTPie itself is, and SFTP is included in the free plan. You can also inspect your server with the auth method checker and the host-key fingerprint viewer.