AppendixF Cisco Secure ACS and Virtual Private Dial-up Netw or ks
VPDN Process
F-4
Cisco Secure ACS 3.0 for Windows 2000/NT Servers User Guide
78-13751-01, Version 3.0
Figure F-5 HG Authenticates T unnel with ACS
5. The HG now authenticates the tunnel with the NAS, where the username is
the name of the HG. This name is chosen based on the name of the tunnel, so
the HG might have different names depending on the tunnel being set up. See
Figure F-6.
Figure F-6 HG Authenticates T unnel with the NA S
6. The NAS now uses its ACS to authenticate the tunnel from the HG. See
Figure F-7 on page F-5.
S6649
Username = nas_tun
Password = CHAP_stuff
Corporation
VPDN user
User = mary@corporation.us
ACS
RSP
Authentication request
ACS
S6650
CHAP challenge
Corporation
VPDN user
User = mary@corporation.us
ACS
RSP
ACS