HP OfficeConnect Firewall Series Manual de usuario descargar pdf (Pagina 147)

OfficeConnect Gigabit VPN Firewall User’s Manual Appendix 22. OBTAINING SUPPORT FOR YOUR PRODUCT

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network-related information. 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 content 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.

Internet The global collection of interconnected networks used for

both private and business communications.

intranet A private, company-internal network that looks like part 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 (computer) 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 Internet access to its customers,

usually for a fee.

LAN Local Area Network

A network limited to a small geographic area, such as a

home, office, or small building.

LED Light Emitting Diode

An electronic light-emitting device. The indicator lights on

the front of the OfficeConnect Gigabit VPN Firewall 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.

Mbps Abbreviation for Megabits per second, or one million bits

per second. Network data rates are often expressed in

Mbps.

NAT Network Address Translation

A service performed by many routers that translates your

network’s publicly known IP address into a private IP

address for each computer on your LAN. Only your router

and your LAN know these addresses; the outside world

sees only the public IP address when talking to a

computer on your LAN.

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