Glossary

Gateway

A gateway is a device used to connect networks with completely different architectures (addressing, protocols, application interfaces, etc.). Although it is not totally correct, the term is also used as a synonym for Router.

See also Bridge, Hub, Router, Switch

Global IP address

See Public IP address

Half duplex

Operating mode for data transfer. Only one party can receive or send data at any one time.

See also Full duplex

HTTP proxy

An HTTP proxy is a Server that network components use for their Internet traffic. All requests are sent via the proxy.

Hub

A hub connects several network components in a star-topology network by sending all the data it receives from one network component to all the other network components.

See also Switch, Bridge, Router, Gateway

IEEE

Institute of Electrical and Electronics Engineers

IEEE is an international body that defines network standards, especially to standardise LAN technologies, transfer protocols, data transfer speeds and wiring.

IEEE 802.11

IEEE 802.11 is a standard for wireless LANs operating in the 2.4 GHz band. In so-called Infrastructure mode terminals can be connected to a base station (Access point) or they can connect with each other spontaneously (Ad-hoc mode).

IGMP

Internet Group Management Protocol

IGMP is an Internet Protocol that enables an Internet computer to inform neighbouring routers that it is a member of a multicast group. With multicasting, a computer can send content on the Internet to several other computers that have registered an interest in the first computer's content. Multicasting can, for example, be used for multimedia programs for media streaming to recipients that have set up multicast group membership.

Infrastructure mode

Infrastructure mode is a way of operating wireless local networks (WLANs) in which an Access point handles the data traffic. Network components cannot establish a direct connection with each other as is the case in Ad-hoc mode.

110