Pluggable Authentication Modules (PAM) are commonly used for the login process in many Linux applications.

pam_otpsmtp

Use this with your cell phone provider's email (SMTP) to SMS gateway and use your phone as a "token" device to login remotely. SSH is a good example. A one time password (OTP) is generated and sent whenever you login.

Features

• Enable for all users or only root
• Enable only for users that have an email address on file
• Configurable SMTP settings
• Works with SSH, su, local login

Downloads

pam_otpsmtp 1.4 - May 25, 2011

Documentation

README