Appendix F:Glossary 827
Nortel WLAN—Security Switch 2300 Series Configuration Guide
WPA Wi-Fi Protected Access. The Wi-Fi Alliance’s version of the Temporal Key Integrity Protocol (TKIP)
that also includes a message integrity code (MIC) known as Michael. Although WPA provides greater wireless
security than the Wired-Equivalent Privacy protocol (WEP), WPA is not as secure as IEEE 802.11i, which
includes both the RC4 encryption used in WEP and Advanced Encryption Standard (AES) encryption, but is
not yet ratified by IEEE. See also AES; RC4; TKIP.
WPA IE A set of extra fields in a wireless frame that contain Wi-Fi Protected Access (WPA) information for
the access point or client. For example, an AP uses the WPA IE in a beacon frame to advertise the cipher suites
and authentication methods that the AP supports for its encrypted SSID.
WPA information element See WPA IE.
WSS See WLAN—Security Switch (WSS).
WSS Software See WLAN Security Switch 2300 Series (WSS Software).
X.500 A standard of the International Organization for Standardization (ISO) and International
Telecommunications Union Telecommunication Standardization Sector (ITU-T), for systematically collecting
the names of people in an organization into an electronic directory that can be part of a global directory
available to anyone in the world with Internet access.
X.509 An International Telecommunications Union Telecommunication Standardization Sector (ITU-T)
Recommendation and the most widely used standard for defining digital certificates.
XML Extensible Markup Language. A simpler and easier-to-use subset of the Standard Generalized Markup
Language (SGML), with unlimited, self-defining markup symbols (tags). Developed by the World Wide Web
Consortium (W3C), the XML specification provides a flexible way to create common information formats and
share both the format and the data on the Internet, intranets, and elsewhere. Designers can create their own
customized tags to define, transmit, validate, and interpret data between applications and between
organizations.