SFTP is configured and enabled at the Site level. You can also disable and enable SFTP access at Settings Template and user level, and specify the SFTP authentication options for a Settings Template or specific user.
Refer to Configuring SFTP Authentication Options for details.
EFT Server SFTP Key Support
EFT Server SSH Key Formats
Enabling SFTP for a Site
Viewing or Modifying Message Authentication Codes (MAC) Settings
Creating SFTP Algorithms
Allowing Access Using the SFTP Protocol
Viewing, Importing, Renaming, and Deleting Client Keys
Modifying the SFTP Identification String