| destination. Alternatively, the maximum number of hops |
| that a packet is allowed to take before being discarded , |
| See also TTL. |
host | A device (usually a computer) connected to a network. |
HTTP | |
| used to transfer data from web sites so that it can be |
| displayed by web browsers. See also web browser |
ICMP | Internet Control Message Protocol An Internet protocol |
| used to report errors and other |
| tion. The ping command makes use of ICMP. |
IGMP | Internet Group Management Protocol An Internet protocol |
| that enables a computer to share information about its |
| membership in multicast groups with adjacent routers. |
| A multicast group of computers is one whose members |
| have designated as interested in receiving specific con- |
| tent from the others. Multicasting to an IGMP group can |
| be used to simultaneously update the address books of |
| a group of mobile computer users or to send company |
| newsletters to a distribution list. |
See Microfilter | |
Internet | The global collection of interconnected networks used for |
| both private and business communications. |
intranet | A private, |
| of the Internet (users access information using web |
| browsers), but is accessible only by employees. |
IP | See TCP/IP. |
IP address | Internet Protocol address The address of a host (com- |
| puter) on the Internet, consisting of four numbers, each |
| from 0 to 255, separated by periods, e.g., 209.191.4.240. |
| An IP address consists of a network ID that identifies |
| the particular network the host belongs to, and a host |
| ID uniquely identifying the host itself on that network. A |
| network mask is used to define the network ID and the |
| host ID. Because IP addresses are difficult to remember, |
| they usually have an associated domain name that can be |
| specified instead. See also domain name, network mask. |
ISP | Internet Service Provider A company that provides Inter- |
| net access to its customers, usually for a fee. |
LAN | Local Area Network A network limited to a small geo- |
| graphic area, such as a home, office, or small building. |
LED | Light Emitting Diode An electronic |
| The indicator lights on the front of the My ADSL Modem |
| are LEDs. |
MAC address | Media Access Control address The permanent hardware |
| address of a device, assigned by its manufacturer. MAC |
| addresses are expressed as six pairs of characters. |
mask | : See network mask. |
NB5Plus4/W User Guide | YML754Rev1 |
102 | www.netcomm.com.au |