User's Manual Part 5

Access / One

Network

Glossary of Terms 197

RADIUS

(Remote Authentication Dial-In User Service) A client-server security protocol

described in RFC 2865 and RFC 2866. Developed 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. See also, authentication and

authorization.

RC4

(River Cipher 4) A common encryption algorithm, designed by RSA., used by

the Wired-Equivalent Privacy (WEP) protocol and Temporal Key Integrity

Protocol (TKIP). See also, TKIP and WEP.

(Registration Authority) 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. See also, PKI.

roaming

The ability of a user (client) to maintain network access when moving between

access points (APs).

rogue AP

An Access Point (AP) that is not authorized to operate within a wireless network.

Rogue APs subvert security of an enterprise network by allowing potentially

unchallenged access to the network resources by any wireless user in the

physical vicinity.

rogue client

A user who is not recognized within a network, but who gains access to it by

intercepting and modifying transmissions to circumvent the normal

authorization and authentication processes.