CHAPTER
12-1
Cisco Secure ACS 3.0 for Windows 2000/NT Servers User Guide
78-13751-01, Version 3.0
12
Administering External User
Databases
After you have configured Cisco Secure Access Control Server for
Windows NT/2000 Servers Version 3.0 (Cisco Secure ACS) 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 12-10
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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