OpenSSH is based on the last free version of Tatu Ylonen's SSH with all patent-encumbered algorithms removed (to external libraries), all known security bugs fixed, new features reintroduced and many other clean-ups. More information about SSH itself can be found in the file README.Ylonen. OpenSSH has been created by Aaron Campbell, Bob Beck, Markus Friedl, Niels Provos, Theo de Raadt, and Dug Song. This port consists of the re-introduction of autoconf support, PAM support (for Linux and Solaris), EGD[1] support, SOCKS support (using the Dante [6] libraries and replacements for OpenBSD library functions that are (regrettably) absent from other unices. This port has been best tested on Linux, Solaris, HPUX, NetBSD and Irix. Support for AIX, SCO, NeXT and other Unices is underway. This version actively tracks changes in the OpenBSD CVS repository.