Chapter 10: Managing the RADIUS Servers
Overview of the SafeWord RADIUS server
218
Overview of the
SafeWord
RADIUS server
As networks grow and branch out to remote locations, network security
increases in importance and administration complexity. Customers need to
protect networks and network services from unauthorized access by remote
users. RADIUS is one of the protocols commonly used to provide these
solutions in today's internetworks.
RADIUS protocol
Authentication is the process of identifying and verifying a user. Several
methods can be used to authenticate a user, but the most common includes a
combination of user name and password. Once a user is authenticated,
authorization to various network resources and services can be granted.
Authorization determines what a user can do, and accounting is the action of
recording what a user is doing or has done.
The RADIUS protocols define the exchange of information between these
components in order to provide authentication, authorization, and accounting
functionality. The RADIUS protocol, as published by Livingston, is a method of
managing the exchange of authentication, authorization, and accounting
information in the network. RADIUS draft was submitted to the Internet
Engineering Task Force (IETF) as a draft standard in June, 1996. RADIUS is a
fully open protocol.
The RADIUS server
The RADIUS Server is an authentication protocol server daemon that has
been interfaced with SafeWord through the EASSP protocol. It supports all of
the RADIUS functionality documented in Internet RFC 2138, and all
functionality as documented in SafeWord publications, with minor restrictions
on multiple simultaneous dynamic password authenticators. The RADIUS
Server can be located on a separate computer, distinct from any computer that
houses the SafeWord AAA server. It can also be located on the same
computer as the AAA server.
RADIUS server features
•
Fully RFC 2138 compliant
The RADIUS Server is fully RFC 2138 compliant.
•
Supports group authorization
The RADIUS Server supports authorization and configuration groups
named in the SafeWord directive. The SafeWord record for any user can
list the name of a group record defined in the RADIUS
users
file.
Most users can be treated as members of a group of users that will receive
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