Why do I want to use S/Key with an SSH/OpenSSH connection?
You do not need to be paranoid to use S/Key with SSH. You do need to understand the security risks of not using S/Key when you are doing a remote login. If you are on a machine that you cannot personally verify has not been altered (physically or with software, including drivers) then you should use S/Key. If you are in a location that you will not have or cannot guarantee absolute privacy you should use S/Key. For the former there are many programs and drivers that can capture keystrokes and thus compromise your system because your password becomes known to the nasty person who bugged the keyboard. For the latter someone may be watching over your shoulder, spying from a distance or even watching you through a camera at the remote site. An Internet Cafe is a good candidate for keystroke grabbing, spies and recording cameras. With the S/Key one-time-passphrase-good-only-for-one-login you won’t have to care if CrackerDude009 is staring at your keyboard at login. That password is used, go
