Aruba Networks ClearPass Guest 3.9, Deployment Manual, Page: 124 / 518

124 | RADIUS Services ClearPass Guest 3.9 | Deployment Guide
3. Complete the
Role Override
,
Expiration
,
Device Limit
, account
Limit
, and
Limit Action
fields with
the appropriate information, then click Save Changes .
Network Access Servers
A Network Access Server (NAS) is a device that provides network access to users, such as a wireless
access point, network switch, or dial-in terminal server. When a user connects to the NAS device, a RADIUS
user authentication request (Access-Request packet) is generated by the NAS.
Network access servers are RADIUS clients, and must be predefined in order to access the RADIUS server.
For security, each NAS device must also have a shared secret which is known only to the device and the
RADIUS server.
To manage network access servers:

Go to
RADIUS > Network Access Servers
.
The Network Access Servers list opens.
Use the Network Access Servers list view to define the NAS devices for this server and to make changes to
existing NAS devices.