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H-11
Cisco Secure ACS 3.0 for Windows 2000/NT Servers User Guide
78-13751-01, Version 3.0
Appendix H      Cisco Secure ACS Internal Architecture
CSTacacs and CSRadius
Script to execute in the event of a failure event—These scripts are normally 
standard Windows NT/2000 .BAT batch command files, but you can use any 
executable in the 
Program Files\CiscoSecure ACS v2.6\CSMon\Scripts
 
directory.
Windows NT/2000 Event Log enable/disable—By default, CSMon logs 
events to the Windows NT/2000 Event Log, but you can disable this function. 
CSV logging cannot be disabled.
Simple mail-transfer protocol (SMTP) server and administrator e-mail 
account details—
To enable Cisco Secure ACS to send e-mail notification of 
error conditions, you must fill in these fields. You can enter any valid e-mail 
account (joe@company.com). The server details can be either a qualified host 
name or a valid IP address. CSMon does not verify delivery of notification 
e-mails, so make sure the information in these fields is correct. To disable 
notification, clear the check box.
CSTacacs and CSRadius
The CSTacacs and CSRadius services communicate between the CSAuth module 
and the access device that is requesting authentication and authorization services. 
For CSTacacs and CSRadius to work properly, the system must meet the 
following conditions:
CSTacacs and CSRadius services must be configured from CSAdmin.
CSTacacs and CSRadius services must communicate with access devices 
such as access servers, routers, switches, and firewalls.
The identical shared secret (key) must be configured both in 
Cisco Secure ACS and on the access device.
The access device IP address must be specified in Cisco Secure ACS.
The type of security protocol being used must be specified in 
Cisco Secure ACS.
CSTacacs is used to communicate with TACACS+ devices and CSRadius to 
communicate with RADIUS devices. Both services can run at the same time. 
When only one security protocol is used, only the applicable service needs to be 
running; however, the other service will not interfere with normal operation and