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H-7
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
CSMon
TACACS+ Administration—Contains the log files of TACACS+ 
administration events
VoIP Accounting—Contains the log files of successful authentication and 
authorization activity for Voice over IP (VoIP) users
CSMon
CSMon is a service provided as a part of Cisco Secure ACS that facilitates 
minimum down time in a remote access network environment. CSMon performs 
four basic activities:
Monitoring—Monitors the overall status of Cisco Secure ACS and the 
system on which it is running
Recording—Records and reports all exceptions to a special log file
Notification—Alerts the administrator to potential problems and real events 
regarding Cisco Secure ACS and records all such problems
Response—Attempts to automatically and intelligently fix detected 
problems
CSMon works for both TACACS+ and RADIUS and automatically detects which 
protocols are in use.
Note
CSMon is not intended as a replacement for system, network, or application 
management applications but is provided as an application-specific utility that 
can be used with other, more generic system management tools.
Monitoring
CSMon actively monitors three basic sets of system parameters:
Generic host system state—Windows NT/2000 itself provides several built-in 
utilities, such as the Event Log and Performance Monitor, to monitor overall 
system health, and there are several commercial applications available. 
CSMon monitors a small number of additional key system thresholds:
Available space on the system hard disk (the drive with the 
Windows NT/2000 directory).