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Chapter 21. Accessing and Controlling Ti... > Running Shells and Commands Remotely...

Running Shells and Commands Remotely Using SSH

With the Secure Shell suite of utilities you can access your machine remotely via a shell or, if you need to transfer files, via its scp and sftp features.

What Is Secure Shell?

SSH, also known as secure shell, is a protocol for secure remote login, file transfer, and tunneling. It can be used as a secure replacement for the more familiar telnet and rlogin protocols without any noticeable difference to the user. For file transfers, SSH can be used as a secure replacement for rcp and ftp. Finally, SSH can be used to tunnel traffic over an encrypted channel. In other words, SSH can be used to transport otherwise insecure traffic more securely. For example, it can be used to encrypt the username and password data transmitted by ftp.


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