Nortel Networks 2300 manual Group transient key See GTK

Glossary 619

group transient key See GTK.

H.323 A set of International Telecommunications Union Telecommunication Standardization Sector (ITU-T) standards that define a framework for the transmission of real-time voice signals over IP packet-switched networks.

hash A one-way algorithm from whose output the input is computationally infeasible to determine. With a good hashing algorithm you can produce identical output from two identical inputs, but finding two different inputs that produce the same output is computationally infeasible. Hash functions are used widely in authentication algorithms and for key derivation procedures.

HiperLAN High-performance radio local area network. A set of wireless LAN (WLAN) communication standards used primarily in European countries and adopted by the European Telecommunications Standards Institute (ETSI).

HMAC Hashed message authentication code. A function, defined in RFC 2104, for keyed hashing for message authentication. HMAC is used with MD5 and the secure hash algorithm (SHA).

hashed message authentication code See HMAC.

Hewlett-Packard Open View See HPOV.

homologation The process of certifying a product or specification to verify that it meets regulatory standards.

HPOV Hewlett-Packard Open View. The umbrella network management system (NMS) family of products from Hewlett-Packard. The Nortel WLAN 2300 System WLAN Management Software tool suite interacts with the HPOV Network Node Manager (NNM).

HTTPS Hypertext Transfer Protocol over Secure Sockets Layer. An Internet protocol developed by Netscape to encrypt and decrypt network connections to Web servers. Built into all secure browsers, HTTPS uses the Secure Sockets Layer (SSL) protocol as a sublayer under the regular HTTP application layer, and uses port 443 instead of HTTP port 80 in its interactions with the lower layer, TCP/IP. See also SSL.

Hypertext Transfer Protocol over Secure Sockets Layer See HTTPS.

IAS Internet Authentication Service. Microsoft’s RADIUS server.

IC Industry Canada. The Canadian governing body for telecommunications.

ICV Integrity check value. The output of a message integrity check.

IE See WPA IE.

IEEE Institute of Electrical and Electronic Engineers. An American professional society whose standards for the computer and electronics industry often become national or international standards. In particular, the IEEE 802 standards for LANs are widely followed.

IGMP Internet Group Management Protocol. An Internet protocol, defined in RFC 2236, that enables an Internet computer to report its multicast group membership to neighboring multicast routers. Multicasting allows a computer on the Internet to send content to other computers that have identified themselves as interested in receiving it.

Nortel WLAN Security Switch 2300 Series Configuration Guide