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RADIUS Remote Authentication Dial-In User Service. A client-server security
protocol described in RFC 2865 and RFC 2866. RADIUS extensions,
including RADIUS support for the Extensible Authentication Protocol
(EAP), are described in RFC 2869. Originally developed by Livingston
Enterprises, Inc., to authenticate, authorize, and account for dial-up
users, RADIUS has been widely extended to broadband and enterprise
networking. The RADIUS server stores user profiles, which include
passwords and authorization attributes.
RC4 A common encryption algorithm, designed by RSA Data Security, Inc.,
used by the Wired-Equivalent Privacy (WEP) protocol and Temporal Key
Integrity Protocol (TKIP).
Network software that verifies a user (client) request for a digital
certificate and instructs the certificate authority (CA) to issue the
certificate. Registration authorities are part of a public-key infrastructure
(PKI), which enables secure exchanges of information over a network.
The digital certificate contains a public key for encrypting and
decrypting messages and digital signatures.
Dial-In User Service
restricted access Permission to use most Mobility System Software (MSS) command-line
interface (CLI) commands required for viewing status information
(display commands), except those that list security information in clear
text. Users with restricted access can clear ARP requests and ping hosts.
Compare enabled access.
RF detection sweep A comprehensive search for radio frequency (RF) signals within a
Mobility Domain™ group, to locate rogue clients, rogue access points,
and ad hoc users. A sweep can be either a scheduled sweep or a
continuous SentrySweep™ search. During a scheduled sweep, each
included Managed Access Point (MAP) radio sweeps all channels in the
IEEE 802.11b/g and 802.11a spectrum. In contrast, SentrySweep
operates only on the disabled radios in a Mobility Domain and does not