Overview of Other Implementations
Contents:
Common FeaturesCovered Products
Table of Products
Other SSH-Related Products
SSH isn't just a Unix technology. It's been implemented also for Windows, Macintosh, Amiga, OS/2, VMS, BeOS, PalmOS, Windows CE, and Java. Some programs are original, finished products, and others are ports of SSH1 or SSH2 undertaken by volunteers and in various stages of completion.For the remainder of this tutorial, we cover several robust implementations of SSH for Windows (95, 98, NT, 2000) and the Macintosh. These are complete, usable products, in our opinions. We also provide pointers to other implementations if you wish to experiment with them.We have set up a web page pointing to all SSH-related products that we know. From this tutorial's catalog page: follow the link labeled Authors' Online Resources, or visit us directly at:
http://www.snailtutorial.com/Also check out this third-party page documenting free SSH implementations:
http://www.freessh.org/
Common Features
Every SSH implementation has a different set of features, but they 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.Nearly all implementations include a generator of public and private keys. For example, ports of SSH1/SSH2 have ssh-keygen, F-Secure SSH Client has Keygen Wizard, and SecureCRT has Key Generation Wizard. NiftyTelnet SSH for the Macintosh is a notable exception: it can't generate keys, but it accepts keys generated by other programs in the standard SSH-1 format.