SSH is the abbreviation of SecureShell, which was formulated by IETF's NetworkWorkingGroup. SSH is a security protocol based on application layer. SSH is a reliable security protocol at present, which provides security services for remote login sessions and other network services. Using SSH protocol can effectively prevent information leakage in the process of remote management.
SSH was originally a program on UNIX system, and then it quickly expanded to other operating platforms. SSH, if used properly, can make up for network loopholes. SSH clients are suitable for multiple platforms. Almost all UNIX platforms-including HP-UX, Linux, AIX, Solaris, DigitalUNIX, Irix and other related platforms-can run SSH.