"Many users of telnet, rlogin, ftp, and other such programs might not realize that their password is transmitted across the internet unencrypted, but it is. OpenSSH encrypts all traffic (including passwords) to effectively eliminate eavesdropping, connection hijacking, and other network-level attacks. Additionally, OpenSSH provides a myriad of secure tunneling capabilities, as well as a variety of authentication methods. "

Un metodo per codificare le password inviate on line.

La versione open source e' openssh