CHAPTER
12-1
User Guide for Cisco Secure ACS for Windows Server
78-14696-01, Version 3.1
12
Administering External User
Databases
After you have configured Cisco Secure Access Control Server
(Cisco Secure ACS) for Windows Server version 3.1 to communicate with an
external user database, you can decide how to implement other Cisco Secure ACS
features related to external user databases. To address these features, this chapter
contains the following sections:
• Unknown User Processing, page 12-1
• Database Group Mappings, page 12-11
For information about the databases supported by Cisco Secure ACS and how to
configure Cisco Secure ACS to communicate with an external user database, see
Chapter 11, “Working with User Databases.”
Unknown User Processing
Unknown users are users who are not listed in the Cisco Secure ACS database.
The Unknown User feature is a form of authentication forwarding. In essence, this
feature is an extra step in the authentication process. In this additional step of the
authentication process, if the username does not exist in the Cisco Secure ACS
database, Cisco Secure ACS forwards the authentication request of an incoming
username and password to external databases with which it is configured to
communicate.
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