SFTP Set-Up
Secure File Transfer Protocol (SFTP) is an encrypted transport based on Secure Shell (SSH). All communications are encrypted, and the server is authenticated by a signature verified by the client with each login. The server datastore where files reside is an encrypted volume with a limited-use access key.
Access to the SFTP service is protected by a system that blocks any client for 24 hours after two failed login attempts.
Please note that your institutional SFTP is not intended for long-term data storage. Files older than one year are subject to deletion.
To generate a key pair use the OpenSSH ssh-keygen tool with the command: ssh-keygen -t rsa-sha2-512 -b 4096 -f {filename} This will generate two files {filename} and {filename}.pub. Paste the contents of {filename}.pub below. {filename} will be used on the SFTP client to connect.
SFTP Set-Up
To set up the SFTP server with Interfolio, please complete the form on Interfolio's Client Community. If you do not have access and believe you should, contact your Customer Success or Account Manager. Once set up, in order to access your institution's SFTP, you will need to enter the following information using an SFTP client:
| Title | Information |
|---|---|
| Connection Type | SFTP (SSH File Transfer Protocol) |
| Server/Host |
transfer.ops.interfolio.com (US) transfer.staging.interfolio.com (Staging) |
| Port | 22 |
| Username | [provided at the time of setup] |
| Password | None |
| SSH Key | Your private key |
Check out this article About Autoload Information for more information.
FAQs
What should I do if I’m having trouble connecting to Interfolio’s SFTP server?
Following a recent security policy update, older versions of some SFTP clients may no longer connect to Interfolio’s SFTP servers. Complete the following troubleshooting steps:
1. Update your SFTP client version: Confirm that your SFTP client meets the minimum version requirement listed below.
| Client | Minimum Version | Recommended Version |
|---|---|---|
| FileZilla | 3.60.0+ | Latest (3.66+) |
| WinSCP | 6.0+ | Latest (6.3+) |
| OpenSSH | 8.2+ | Latest (9.6+) |
| Cyberduck | 8.0+ | Latest (9.0+) |
| Transmit | 5.7+ | Latest |
| PuTTY/PSCP | 0.76+ | Latest (0.80+) |
| MobaXterm | 21.0+ | Latest |
| Bitvise | 9.0+ | Latest |
2. Verify your connection settings: Confirm the following connection details are correctly configured.
- Host name: transfer.ops.interfolio.com or transfer.us2.interfolio.com
- Port: 22
- Authentication: Your SSH private key
3. Accept the new host fingerprint: If your SFTP client enforces host fingerprint verification (such as WinSCP, PuTTY, OpenSSH, or MobaXterm), you may be prompted to accept a new server fingerprint upon your first connection after the upgrade. Accept the prompt when it appears. If your client does not automatically prompt you, you may need to manually update or remove the previously stored fingerprint in your client’s known hosts or trusted keys settings. Then reconnect to accept the new one.
4. Contact Support if the issue continues: If the issue persists after completing the steps above, please provide the following information to help us investigate:
- The exact error message or error code you are receiving
- The SFTP client and version number you are using
- The date and time the error occurred
- Any logs or screenshots, if available