4.1 Key Points in RADIUS Accounting
The design of accounting in RADIUS is based upon three major
- Accounting will be based on a client/server model.
The RADIUS accounting machine
is the server to the RADIUS client gear, which acts as the client.
The client passes the usage data to the RADIUS server for processing.
The RADIUS server acknowledges successful receipt of the data. It is
also possible for the RADIUS server to act as an accounting proxy,
much like the similar capability in the authentication and
- Communications between devices will be secure.
All data is passed to
and from the RADIUS server and the
client gear through the use of a shared secret, which is never
transmitted across the wire.
- RADIUS accounting will be extensible.
The format of the accounting attributes is much like those of the
authentication and authorization attributes, in that most of the
services offered by the implementations can be defined and qualified
using AVPs. AVPs can be added and modified to an existing
implementation without disrupting the
functionality already in use.