UserUserRADIUS ClientRADIUS ClientOpenAMOpenAM1Prompt for user nameand password2Provide user nameand password3Authentication request usingAccess-Request packet4Access-Challenge packetwith State field5Prompt for one-time password6Get one-time passwordfrom authenticator appon mobile phone7Provide one-time password8Response using Access-Requestpacket with State field9Access-Accept packet