![]() OpenSSH can use many authentication methods, including plain password, public key, and Kerberos tickets. If a remote user connects to an OpenSSH server with scp, the OpenSSH server daemon initiates a secure copy of files between the server and client after authentication. For example, if the remote computer is connecting with the ssh client application, the OpenSSH server sets up a remote control session after authentication. When a connection request occurs, sshd sets up the correct connection depending on the type of client tool connecting. The OpenSSH server component, sshd, listens continuously for client connections from any of the client tools. OpenSSH provides a server daemon and client tools to facilitate secure, encrypted remote control and file transfer operations, effectively replacing the legacy tools. Traditional tools used to accomplish these functions, such as telnet or rcp, are insecure and transmit the user’s password in cleartext when used. OpenSSH is a freely available version of the Secure Shell (SSH) protocol family of tools for remotely controlling, or transferring files between, computers. You will also learn about some of the configuration settings possible with the OpenSSH server application and how to change them on your Ubuntu system. OpenSSH is a powerful collection of tools for the remote control of, and transfer of data between, networked computers. Multi-node configuration with Docker-ComposeÄistributed Replicated Block Device (DRBD)
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