Nortel Networks 2300 manual Remote Authentication Dial-In User Service See Radius

626Glossary

registration authority (RA) 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.

Remote Authentication Dial-In User Service See RADIUS.

restricted access Permission to use most WLAN 2300 System Software (WSS Software) command-line interface (CLI) commands required for viewing status information (show 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 ports, and ad hoc users. A sweep can be either a scheduled sweep or a continuous SentrySweep™ search. During a scheduled sweep, each included Access Point (AP) access point 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 disrupt service.

roaming The ability of a wireless user (client) to maintain network access when moving between access ports (APs).

robust security network See RSN.

rogue access port An access point (AP) that is not authorized to operate within a wireless network. Rogue access ports subvert the security of an enterprise network by allowing potentially unchallenged access to the enterprise network by any wireless user (client) in the physical vicinity.

rogue client A user (client) 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.

RSA A public-key algorithm developed in 1977 by RSA Data Security, Inc., used for encryption, digital signatures, and key exchange.

RSN Robust security network. A secure wireless LAN (WLAN) based on the developing IEEE 802.11i standard.

RSSI Received signal strength indication. The received strength of an incoming radio frequency (RF) signal, typically measured in decibels referred to 1 milliwatt (dBm).

scalability The ability to adapt easily to increased or decreased requirements without impairing performance.

secure hashing algorithm See SHA.

Secure Shell protocol See SSH.

Secure Sockets Layer protocol See SSL.

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