RADIUS OTP(An authentication method that supports the authentication to RADIUS server using passwords that change, based on time or on an authentication request counter)
RADIUS One-Time Password(An authentication method that supports the authentication to RADIUS server using passwords that change, based on time or on an authentication request counter)
Remote Authentication Dial-In User Service A proposed Internet protocol in which an authentication server provides authorization and authentication information to a network server to which a user is attempting to link(Remote Authentication Dial-In User Service)