This site has multiple access to downloads for a variety of systems for SSH, SCP, and SFTP.http://www.openssh.org/http://www.chiark.greenend.org.uk/~sgtatham/putty/

THE CTDP LINUX USER'S GUIDE VERSION 0.6.2 NOVEMBER 6, 2000 http://www.comptechdoc.org/os/linux/usersguide/index.html [http://www.comptechdoc.org/os/linux/usersguide/index.html]