3Com 7757 Configuration Manual page 514

514 C 49: AAA & RADIUS & HWTACACS C
HAPTER ONFIGURATION
Figure 131 Network diagram for a typical HWTACACS application
HWTACACS client
Host
Basic message exchange procedure in HWTACACS
For example, use HWTACACS to implement authentication, authorization, and
accounting for a telnet user. Figure 132 illustrates the basic message exchange
procedure:
Figure 132 The AAA implementation procedure for a telnet user
User
Requests to log in
Requests username
Enters username
Requests password
Enters password
Allows user to log in
Exits the switch
HWTACACS server
HWTACACS server
TACACS client
Authentication start request
Authentication response , requesting username
Authentication continuous message ,
carrying username
Authentication response , requesting password
Authentication continuous message ,
carrying password
Authentication success response
Authorization request
Authorization success response
Accounting start request
Accounting start response
Accounting stop request
Accounting stop response
TACACS server