Common Features
Every SSH implementation has a different set of features, but virtually all have one thing in common: a client program for logging into remote systems securely. Some clients are command line-based, and others operate like graphical terminal emulators, opening windows with dozens of configurable settings.
The remaining features vary widely across implementations. Secure file copy (scp and sftp), remote batch command execution, SSH servers, SSH agents, and particular authentication and encryption algorithms are found in only some of the products. Most include a generator of public and private keys.
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