3Com MSR 50 Series Configuration Manual page 1758

1758 C 93: AAA/RADIUS/HWTACACS C
HAPTER ONFIGURATION
Figure 515 Network diagram for a typical HWTACACS application
HWTACACS server
HWTACACS client
Host
HWTACACS server
Basic message exchange process of HWTACACS
The following takes Telnet user as an example to describe how HWTACACS
performs user authentication, authorization, and accounting. Figure 516 illustrates
the basic message exchange process of HWTACACS.