SFTP is a file transfer protocol that provides manipulation capabilities and routes data through an SSH tunnel. Therefore, it needs an SSH client to connect to an SSH server. SSH provides a secure channel using the client-server architecture. It creates a tunnel to allow remote command execution, login, and command-line, but it also protects any network service, including SFTP and SCP. Secure Shell (SSH) is a cryptographic networking protocol that gives users secure access to remote resources via unsecured networks.

Extend your SFTP server functionality with an external service.Connecting from an SFTP client using a key.Installing and configuring the OpenSSH server.Ways to set up an SFTP server on Ubuntu?.We’ll also create a user, a folder with permissions, restrict the access, configure firewall rules, configure authentication keys, and finally test our server. In this guide, we are going to set up an SFTP server on Ubuntu 18.04 with OpenSSH. Third, you can leverage a cloud-based service to mount an SFTP server as a folder in Ubuntu. The second is using the FTP Server with Very Secure FTP Deamon (VSFTPD) and then running it through an SSH, but this second approach is not an SFTP but FTP over an SSH server. There are a couple of ways to set up an SFTP server in Ubuntu one uses OpenSSH, the suite of secure networking utilities based on the Secure Shell (SSH) protocol.

Openssh server ubuntu