SSH Secure Shell

Developed by SSH Communications Security Ltd. SSH is a program to log into a web server over the internet, to execute commands on the remote server and move files. SSH provides strong authentication and secure communications over insecure channels.

SSH protects a web server from attacks such as DNS spoofing, IP source routing, and IP spoofing. An attacker who has managed to take over a network can only force ssh to disconnect. The attacker cannot play back the traffic or hijack the connection when encryption is enabled.

When using ssh's slogin (secure login) the entire login session, including transmission of password, is encrypted; therefore it is almost impossible for an outsider to collect passwords.

SSH is available for Windows, Unix, Macintosh, and OS/2, and it also works with RSA authentication.