Using Remote Access Concentrator Server Tools for Windows NT
Chapter 4 Using Security Features
4-10
RADIUS Security
RADIUS is an IETF-developed protocol that defines a communication
standard between a Network Access Server (NAS) and a host-based
communication server. RADIUS modes are as follows:
•
RADIUS Authentication includes authentication of the
dial-up user to the RADIUS server, and authentication of the
RADIUS server to the NAS. RADIUS supports authentication
modes PAP and CHAP.
•
RADIUS Accounting, another IETF-developed protocol, defines
a communication standard between an NAS and a host-based
accounting server. It records duration of service, packet
throughput, and raw throughput.
•
RADIUS Authorization is not supported in this release, but
Authorization is addressed by the Access Control Protocol
(ACP). Authorization of the acp_userinfo, acp_restrict, and
acp_dialup files applies to users that are authenticated through
RADIUS.