NetComm NB1300 Plus 4W - Manual (Page 78)

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Page 78 NB1300_2 ADSL Modem
Appendix C - Glossary
ADSL: Asymmetric Digital Subscriber Line (ADSL), as its name indicates, is an
asymmetrical data transmission technology with higher traffic rate
downstream and lower traffic rate upstream. ADSL technology satisfies
the bandwidth requirements of applications which demand .asymmetric.
traffic, such as web surfing, file downloads, and telecommuting.
Bandwidth: The amount of data that can be transmitted in a fixed amount of time.
DHCP: Dynamic Host Configuration Protocol (DHCP) is a protocol for
assigning dynamic IP Addresses to devices on a network. Dynamic
Addressing means that a device can have a different IP Address each time
it connects to the network.
DNS: Domain Name Server (DNS), translates domain names into IP Addresses.
To help us recognize and remember domain names they are alphabetic in
form, however, the Internet actually runs on numbered IP Addresses.
DNS servers translate domain names into their respective IP Addresses.
Ethernet: One of the most common Local Area Network (LAN) standards.
Ethernet uses a bus topology which supports a data transfer rate of 10
or 100 Mbps.
Domain Name: A name that identifies one or more IP Addresses. For example, the
domain name microsoft.com represents about a dozen IP Addresses.
Domain names are used in URLs to identify particular Web pages. For
example, in the URL http://www.pcwebopedia.com/index.html, the
domain name is pcwebopedia.com.
Firewall: A security system used to enforce an access control policy between an
organisation’s networks and the Internet.
Gateway: A gateway is a network point that acts as an entrance to another
network.
IPSec: Internet Protocol Security is a security standard for network
transmission, which is often used for VPN connections. It provides
authentication and packet encryption over the Internet.
LAN: Local Area Network (LAN) is a computer network that spans a
relatively small area. A system of LANs connected is called a wide area
network (WAN).
MAC Address: Media Access Control Address (MAC) is a hardware address that
uniquely identifies each node of a network.
NAT: Network Address Translation (NAT) is a routing protocol that allows
global IP Addresses to be translated into multiple private IP Addresses
for use on internal LAN networks. The explosion in the use of the
Internet has created a critical problem for the Internet Assigned Numbers
Authority (IANA) which is in charge of assigning IP Addresses to
Internet users, ISPs etc. NAT is a technology that has been introduced to
help maximize the utilization of assigned IANA and global IP Addresses.