User's Manual

Glossary
Installation and User Guide: Wireless LAN Client Adapter 33
measured, and improved. In a wireless network, QoS is commonly managed
through the use of policies.
Remote Authentication Dial-In User Service (RADIUS)
A client/server protocol and software that enables remote access servers to
communicate with a central server to authenticate users and authorize service or
system access. RADIUS permits maintenance of user profiles in a central
repository that all remote servers can share.
Radio Frequency (RF)
The electromagnetic wave frequency radio used for communications applications.
Roaming
Analogous to the way cellular phone roaming works, roaming in the wireless
networking environment is the ability to move from one AP coverage area to
another without interruption in service or loss in connectivity.
Rogue AP
An access point that connects to the wireless network without authorization.
Secure SHell (SSH)
Also known as the Secure Socket Shell, SSH is a UNIX-based command line
interface for secure access to remote systems. Both ends of communication are
secured and authenticated using a digital certificate, and any passwords exchanged
are encrypted.
Service Set Identifier (SSID)
The SSID is a unique identifier attached to all packets sent over a wireless
network, identifying one or more wireless network adapters as “belonging” to a
common group. Some Access Points can support multiple SSIDs, allowing for
varying privileges and capabilities, based on user roles.
Secure Sockets Layer (SSL)
A common protocol for message transmission security on the Internet. Existing as
a program layer between Internet's Hypertext Transfer Protocol (HTTP) and
Transport Control Protocol (TCP) layers, SSL is a standard feature in Internet
Explorer, Netscape, and most web server products.
Simple Mail Transfer Protocol (SMTP)
Protocol used to transfer email messages between email servers.
Simple Network Management Protocol (SNMP)
An efficient protocol for network management and device monitoring.
SNMP trap
A process that filers SNMP messages and saves or drops them, depending upon
how the system is configured.
Spanning Tree Protocol (STP)
A protocol that prevents bridging loops from forming due to incorrectly configured
networks.
Station (STA)
An 802.11 capable device that supports only one 802.11 network interface, capable
of establishing a Basic Service Set 802.11 network (i.e., peer-to-peer network)