Secure Shell (SSH)
Secure Shell (SSH) is a secure alternative to Telnet. SSH provides security by encrypting data as it travels between systems. It also provides more robust authentication systems than Telnet.
Although SSH, like Telnet, is primarily associated with UNIX and Linux systems, implementations of SSH are available for all commonly used computing platforms including Windows and Macintosh. As discussed earlier, SSH is the foundational technology for the Secure File Transfer Protocol (SFTP).