D-Link DFL-1000 [156/168] Glossary

D-Link DFL-1000 [156/168] Glossary
DFL-1000 User Manual
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Glossary
Connection : A link between machines, applications, processes, and so on that can be logical, physical,
or both.
DMZ, Demilitarized Zone : Used to host Internet services without allowing unauthorized access to an
internal (private) network. Typically, the DMZ contains servers accessible to Internet traffic, such as Web
(HTTP) servers, FTP servers, SMTP (email) servers and DNS servers.
DMZ interface : The DFL-1000 interface that is connected to your DMZ network.
DNS, Domain Name Service : A service that converts symbolic node names to IP addresses.
Ethernet : A local-area network (LAN) architecture that uses a bus or star topology and supports data
transfer rates of 10 Mbps. Ethernet is one of the most widely implemented LAN standards. A newer
version of Ethernet, called 100 Base-T (or Fast Ethernet), supports data transfer rates of 100 Mbps. And
the newest version, Gigabit Ethernet, supports data rates of 1 gigabit (1,000 megabits) per second.
External interface : The DFL-1000 interface that is connected to the Internet.
FTP, File transfer Protocol : An application and TCP/IP protocol used to upload or download files.
Gateway : A combination of hardware and software that links different networks. Gateways between
TCP/IP networks, for example, can link different subnetworks.
HTTP, Hyper Text Transfer Protocol : The protocol used by the World Wide Web. HTTP defines how
messages are formatted and transmitted, and what actions Web servers and browsers should take in
response to various commands.
HTTPS : The SSL protocol for transmitting private documents over the Internet using a Web browser.
Internal interface : The DFL-1000 interface that is connected to your internal (private) network.
Internet : A collection of networks connected together that span the entire globe using the NFSNET as
their backbone. As a generic term, it refers to any collection of interdependent networks.
ICMP, Internet Control Message Protocol : Part of the Internet Protocol (IP) that allows for the
generation of error messages, test packets, and information messages relating to IP. This is the protocol
used by the ping function when sending ICMP Echo Requests to a network host.
IKE, Internet Key Exchange : A method of automatically exchanging authentication and encryption keys
between two secure servers.
IMAP, Internet Message Access Protocol : An Internet email protocol that allows access to your email
from any IMAP compatible browser. With IMAP, your mail resides on the server.
IP, Internet Protocol : The component of TCP/IP that handles routing.
IP Address : An identifier for a computer or device on a TCP/IP network. An IP address is a 32-bit
numeric address written as four numbers separated by periods. Each number can be zero to 255.
L2TP, Layer Two (2) Tunneling Protocol : An extension to the PPTP protocol that enables ISPs to
operate Virtual Private Networks (VPNs). L2TP merges PPTP from Microsoft and L2F from Cisco
Systems. To create an L2TP VPN, your ISP's routers must support L2TP.
IPSec, Internet Protocol Security : A set of protocols that support secure exchange of packets at the IP
layer. IPSec is most often used to support VPNs.
LAN, Local Area Network : A computer network that spans a relatively small area. Most LANs connect
workstations and personal computers. Each computer on a LAN is able to access data and devices
anywhere on the LAN. This means that many users can share data as well as physical resources such as
printers.
MAC address, Media Access Control address : A hardware address that uniquely identifies each node
of a network.
MIB , Management Information Base : A database of objects that can be monitored by an SNMP
network manager.
Modem : A device that converts digital signals into analog signals and back again for transmission over
telephone lines.

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