Netgear DG834Gv1 – 54 Mbps Wireless ADSL Firewall Modem Reference Manual

Glossary

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A four-byte number uniquely defining each host on the Internet. Ranges of 
addresses are assigned by Internic, an organization formed for this purpose. 
Usually written in dotted-decimal notation with periods separating the bytes 
(for example, 134.177.244.57).

Internet Protocol Security. IPSec is a series of guidelines for securing private 
information transmitted over public networks. IPSec is a VPN method 
providing a higher level of security than PPTP.

Internet service provider.

The main internetworking protocol used in the Internet. Used in conjunction 
with the Transfer Control Protocol (TCP) to form TCP/IP.

 local area network.

LAN. A communications network serving users within a limited area, such as 
one floor of a building. A LAN typically connects multiple personal 
computers and shared network devices such as storage and printers. Although 
many technologies exist to implement a LAN, Ethernet is the most common 
for connecting personal computers.

Media Access Control address. A unique 48-bit hardware address assigned to 
every Ethernet node. Usually written in the form 01:23:45:67:89:ab.

Megabits per second.

In cable wiring, the concept of transmit and receive are from the perspective 
of the computer, which is wired as a Media Dependant Interface (MDI). In 
MDI wiring, a computer transmits on pins 1 and 2. At the hub, switch, router, 
or access point, the perspective is reversed, and the hub receives on pins 1 and 
2. This wiring is referred to as Media Dependant Interface - Crossover 
(MDI-X).

Most Significant Bit or Most Significant Byte.

 Maximum Transmission Unit.

The size in bytes of the largest packet that can be sent or received.

The portion of a number, address, or field that is farthest left when written as a 
single number in conventional hexadecimal ordinary notation. The part of the 
number having the most value.

 Network Address Translation.