Cisco Systems Servers Manuale Utente

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Chapter 6      Setting Up and Managing User Groups
Configuration-specific User Group Settings
6-20
Cisco Secure ACS 3.0 for Windows 2000/NT Servers User Guide
78-13751-01, Version 3.0
Enabling Password Aging for the CiscoSecure User Database
The password aging feature of Cisco Secure ACS enables you to force users to 
change their passwords under one or more of the following conditions:
After a specified number of days (age-by-date rules)
After a specified number of logins (age-by-uses rules)
The first time a new user logs in (password change rule)
Varieties of Password Aging Supported by Cisco Secure ACS
Cisco Secure ACS supports three distinct password aging mechanisms, as 
follows: 
Windows NT/2000 Password Aging—Users must be in the 
Windows NT/2000 database and be using the Windows Dial-up Networking 
(DUN) client. For information on the requirements and configuration of this 
password aging mechanism, see the 
Password Aging for Device-hosted Sessions—Users must be in the 
CiscoSecure user database, the AAA client must be running TACACS+, and 
the connection must use Telnet.
Password Aging for Transit Sessions—Users must be in the CiscoSecure 
user database. Users must be using the Windows 95/98/ME, Windows NT 
3.51, Windows NT 4.0, Windows 2000 DUN client, or another PPP dialup 
client. Further, the end-user client must have CiscoSecure Authentication 
Agent (CAA) installed in Windows 95/98/ME or Windows NT/2000.
Tip
The CAA software is available at http://www.cisco.com.
 Also, to run password aging for transit sessions, the AAA client can be 
running either RADIUS or TACACS+; and the AAA client must be using 
Cisco IOS Release 11.2.7 or later and be configured to send a “watchdog” 
accounting packet (aaa accounting new-info update) with the IP address of 
the calling station. (Watchdog packets are interim packets sent periodically 
during a session. They enable an approximation of session length in the event 
that the AAA client fails and, thereby, no stop packet is received to mark the 
end of the session.)