Dear all, I am a new user of freeradius, currently using freeradius 1.1.0 on Redhat Linux. I wish to setup freeradius for a 2 factor authentication, such that: NAS issue an Access-Request to Radius server Radius server authenticate against LDAP once successful -- Radius server then issue an Access-Chanllenge to NAS (second factor, asking for an additional password/token) NAS reply with an Acces-Request Radius server then authenticate the second Access-request and reply to NAS. The above is roughly the authentication flow I wish to achieve. After reading the configuration setup instructions, I still have no clue where to start with the configuration, can some one please enlighten me? Is there a custom built radius module required? Thanks in advance for all the help regards Kaden --------------------------------- New Yahoo! Messenger with Voice. Call regular phones from your PC for low, low rates.