RADIUS (Remote Authentication Dial-In User Service) is a client/server security protocol most widely known for enabling remote authentication and access. You can enable your network to use any authentication method that supports the RADIUS standard.-including token cards and smartcards-simply by installing and configuring the RADIUS method. The RADIUS authentication method requires you to set the following parameters:

Host Name	Host name of the primary RADIUS server Default = localhost
Port Number	Listening port number of the primary RADIUS server Default = 1645
Timeout (seconds)	Number of seconds the Oracle server will wait for a response from the primary RADIUS server Default = 15 seconds
Number of Retries	Number of times the Oracle database server should send messages to the primary RADIUS server Default = 3
Secret File	The file location of the secret key on the Oracle server. For security reasons, Oracle recommends that you change this file to root access only.
Send Accounting	RADIUS accounting logs Oracle database server access information and stores this information in a file on the RADIIUS accounting server. You can use this feature only when both the RADIUS authentication servers support this feature. Values = ON or OFF
Challenge Response	The value of this field is ON when you want to present the user with a challenge-response GUI See Also: Appendix C, Integrating Authentication Devices Using RADIUS, in the Oracle Advanced Security Administrator's Guide
Default Keyword	Keyword that verifies the identity of a user through a challenge-response mechanism Default = challenge
Interface Class Name	The name of the class that handles the challenge response conversation between the Oracle client and the RADIUS server. Default = DefaultRadiusInterface

See Also: Oracle Advanced Security: Other Params