H3C S7500E Series Ethernet Switches Operation Manual

Operation Manual – AAA RADIUS HWTACACS
H3C S7500E Series Ethernet Switches
Chapter 1 AAA/RADIUS/HWTACACS
Configuration
1-10
II. 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 1-6 illustrates the basic
message exchange process of HWTACACS.
Figure 1-6 Basic message exchange process of HWTACACS for a Telnet user
1) A Telnet user applies to access the NAS.
2) Upon receiving the request, the HWTACACS client sends a start-authentication
packet to the HWTACACS server.
3) The HWTACACS server sends back an authentication response requesting the
username.