Bay Networks Remote Annex, User Manual, Page: 65 / 90

4-11
Chapter 4 Using Security Features
Remote Annex Server Tools for Windows NT
®
User Guide
RADIUS and ACP Protocol Operation
RADIUS and ACP servers work together to provide the user with a
standard means of communication between a Network Access Server and
a host-based server.
When or If... The...
the security profile matches the
Server Tools Options dialog box
RADIUS On/Off radio button, expedited remote procedure call
daemon (ERPCD)/ACP prompts the
Remote Annex for the user name and
password.
the user name and password are
entered correctly, ERPCD/ACP sends a RADIUS Access-
Request packet to the RADIUS server
(this packet contains the normal
RADIUS header and the Access-
Request attributes).
the Access-Accept, Access-
Reject, or Access-Challenge
packet fails to arrive in the
specified amount of time, ERPCD/ACP re-sends the packet.
no response is received, ERPCD/ACP sends the Access-
Request packet to the backup RADIUS
server, if configured in the Server Tools
Options dialog box.
ERPCD/ACP receives an Access-
Accept packet, ERPCD/ACP considers the user
validated.
ERPCD/ACP receives an Access-
Reject or an unsupported Access-
Challenge or the backup
RADIUS server also fails to
respond, ERPCD/ACP considers the user
invalidated.