D-Link DI-634M Router Manual PDF (Setup & Configuration Guide)

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DI-634M User’s Manual

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Appendix

Glossary

A

Access Control List -

ACL.

Database of network devices that are allowed to access resources on the

network.

Access Point -

AP. Device that allows wireless clients to connect to it and access the network

Ad-hoc network -

Peer-to-Peer network between wireless clients

Address Resolution Protocol -

ARP. Used to map MAC addresses to IP addresses so that conversions can

be made in both directions.

ADSL -

Asymmetric Digital Subscriber Line

Advanced Encryption Standard -

AES. Government encryption standard

Alphanumeric -

Characters A-Z and 0-9

Antenna -

Used to transmit and receive RF signals.

AppleTalk –

A set of Local Area Network protocols developed by Apple for their computer systems

AppleTalk Address Resolution Protocol –

AARP. Used to map the MAC addresses of Apple computers to

their AppleTalk network addresses, so that conversions can be made in both directions.

Application layer -

7th Layer of the OSI model. Provides services to applications to ensure that they can

communicate properly with other applications on a network.

ASCII -

American Standard Code for Information Interchange. This system of characters is most commonly

used for text ﬁles

Attenuation –

The loss in strength of digital an analog signals. The loss is greater when the signal is being

transmitted over long distances.

Authentication –

To provide credentials, like a Password, in order to verify that the person or device is really

who they are claiming to be

Automatic Private IP Addressing -

APIPA. An IP address that a Windows computer will assign itself when it

is conﬁgured to obtain an IP address automatically but no DHCP server is available on the network

B

Backward Compatible -

The ability for new devices to communicate and interact with older legacy devices

to guarantee interoperability

Bandwidth -

The maximum amount of bytes or bits per second that can be transmitted to and from a network

device

Basic Input/Output System –

BIOS. A program that the processor of a computer uses to startup the system

once it is turned on

Baud –

Data transmission speed

Bit rate –

The amount of bits that pass in given amount of time

bit/sec –

bits per second

BOOTP –

Bootstrap Protocol.

Allows for computers to be booted up and given an IP address with no user

intervention

Bottleneck –

A time during processes when something causes the process to slowdown or stop all together

Broadband –

A wide band of frequencies available for transmitting data

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Appendix

Broadcast –

Transmitting data in all directions at once

Browser –

A program that allows you to access resources on the web and provides them to you graphically

C

Cable modem –

A device that allows you to connect a computer up to a coaxial cable and receive Internet

access from your Cable provider

CardBus –

A newer version of the PC Card or PCMCIA interface.

It supports a 32-bit data path, DMA, and

consumes less voltage

Carrier Sense Multiple Access/Collision Avoidance –

CSMA/CA

Carrier Sense Multiple Access/Collision Detect –

CSMA/CD

CAT 5 –

Category 5. Used for 10/100 Mbps or 1Gbps Ethernet connections

Client –

A program or user that requests data from a server

Collision –

When do two devices on the same Ethernet network try and transmit data at the exact same

time.

Cookie – I

nformation that is stored on the hard drive of your computer that holds your preferences to the site

that gave your computer the cookie

CSMA/CA –

Carrier Sense Multiple Access/Collision Avoidance

CSMA/CD –

Carrier Sense Multiple Access/Collision Detection

D

Data –

Information that has been translated into binary do that it can be processed or moved to another

device

Data Encryption Standard –

Uses a randomly selected 56-bit key that must be known by both the sender and

the receiver when information is exchanged

Data-Link layer –

The second layer of the OSI model.

Controls the movement of data on the physical link of

a network

Database –

Organizes information so that it can be managed updated, as well as easily accessed by users

or applications

DB-25 –

A 25 ping male connector for attaching External modems or RS-232 serial devices

DB-9 –

A 9 pin connector for RS-232 connections

dBd -

decibels related to dipole antenna

dBi -

decibels relative to isotropic radiator

dBm -

decibels relative to one milliwatt

Decrypt –

To unscramble an encrypted message back into plain text

Default

– A predetermined value or setting that is used by a program when no user input has been entered

for this value or setting

Demilitarized zone – DMZ.

A single computer or group of computers that can be accessed by both users

on the Internet as well as users on the Local Network, but that is not protected by the same security as the

Local Network.

DHCP – Dynamic Host Conﬁguration Protocol.

Used to automatically assign IP addresses from a predeﬁned

pool of addresses to computers or devices that requests them

Digital certiﬁcate –

An electronic method of providing credentials to a server in order to have access to it or

a network

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Appendix

Direct Sequence Spread Spectrum

– DSSS. Modulation technique used by 802.11b wireless devices

DNS – Domain Name System.

Translates Domain Names to IP addresses

DOCSIS –

Data Over Cable Service Interface Speciﬁcations.

The standard interface for cable modems

Domain name –

A name that is associated with an IP address

Download –

To send a request from one computer to another and have the ﬁle transmitted back to the

requesting computer

DSL –

Digital Subscriber Line.

High bandwidth Internet connection over telephone lines

Duplex –

Sending and Receiving data transmissions at the sane time

Dynamic DNS service –

DDNS is provided by companies to allow users with Dynamic IP addresses to obtain a

Domain Name that will always by linked to their changing IP address.

The IP address is updated by either client

software running on a computer or by a router that supports DDNS, whenever the IP address changes.

Dynamic IP address –

IP address that is assigned by a DHCP server and that may change.

Cable Internet

providers usually use this method to assign IP addresses to their customers.

E

EAP –

Extensible Authentication Protocol

Email –

Electronic Mail is a computer-stored message that is transmitted over the Internet

Encryption –

Converting data into cyphertext so that it cannot be easily read

Enterprise –

Large organizations that use computers

Ethernet –

The most widely used technology for Local Area Networks.

F

Fiber optic –

A way of sending data through light impulses over glass or plastic wire or ﬁber

File server –

A computer on a network that stores data so that the other computers on the network can all

access it

File sharing –

Allowing data from computers on a network to be accessed by other computers on the network

will different levels of access rights

Firewall –

A device that protects resources of the Local Area Network from unauthorized users outside of the

local network

Firmware –

Programming that is inserted into a hardware device that tells it how to function

Fragmentation –

Breaking up data into smaller pieces to make it easier to store

FTP –

File Transfer Protocol.

Easiest way to transfer ﬁles between computers on the Internet

Full-duplex –

Sending and Receiving data at the same time

G

Gain –

The amount an ampliﬁer boosts the wireless signal

Gateway –

A device that connects your network to another, like the internet

Gbps –

Gigabits per second

Gigabit Ethernet –

Transmission technology that provides a data rate of 1 billion bits per second

Graphical user interface –

GUI

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Appendix

H

H.323 –

A standard that provides consistency of voice and video transmissions and compatibility for

videoconferencing devices

Half-duplex –

Data cannot be transmitted and received at the same time

Hashing –

Transforming a string of characters into a shorter string with a predeﬁned length

Hexadecimal –

Characters 0-9 and A-F

HomePNA –

Networking over telephone lines

HomeRF –

Networking standard that combines 802.11b and DECT (digital Enhanced Cordless

Telecommunication) that provides speeds up to 1.6 Mbps and a distance of 150 ft using a Frequency Hopping

transmission method

Hop –

The action of data packets being transmitted from one router to another

Host –

Computer on a network

HTTP –

Hypertext Transfer Protocol is used to transfer ﬁles from HTTP servers (web servers) to HTTP clients

(web browsers)

HTTPS –

HTTP over SSL is used to encrypt and decrypt HTTP transmissions

Hub –

A networking device that connects multiple devices together

I

ICMP –

Internet Control Message Protocol

IEEE –

Institute of Electrical and Electronics Engineers

IETF –

Internet Engineering Task Force

IGMP –

Internet Group Management Protocol is used to make sure that computers can report their multicast

group membership to adjacent routers

IIS –

Internet Information Server is a WEB server and FTP server provided by Microsoft

IKE –

Internet Key Exchange is used to ensure security for VPN connections

Infrastructure –

In terms of a wireless network, this is when wireless clients use an Access Point to gain

access to the network

Internet –

A system of worldwide networks which use TCP/IP to allow for resources to be accessed from

computers around the world

Internet Explorer –

A World Wide Web browser created and provided by Microsoft

Internet Protocol –

The method of transferring data from one computer to another on the Internet

Internet Protocol Security –

IPsec provides security at the packet processing layer of network

communication

Internet Service Provider –

An ISP provides access to the Internet to individuals or companies

Interoperability –

The ability for products to interact with other products without much customer interaction

Intranet –

A private network

Intrusion Detection –

A type of security that scans a network to detect attacks coming from inside and outside

of the network

IP –

Internet Protocol

IP address –

A 32-bit number, when talking about Internet Protocol Version 4, that identiﬁes each computer

that transmits data on the Internet or on an Intranet

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Appendix

IPsec –

Internet Protocol Security

IPv6 –

Internet Protocol Version 6 uses 128-bit addresses and was developed to solve the problem that we

face of running out of IP version 4 addresses

IPX –

Internetwork Packet Exchange is a networking protocol developed by Novell to enable their Netware

clients and servers to communicate

ISP –

Internet Service Provider

J

Java –

A programming language used to create programs and applets for web pages

K

Kbps –

Kilobits per second

Kbyte -

Kilobyte

Kerberos –

A method of securing and authenticating requests for services on a network

L

LAN –

Local Area Network

Latency

– The amount of time that it takes a packet to get from the one point to another on a network.

Also

referred to as delay

LED

- Light Emitting Diode

Legacy

– Older devices or technology

Local Area Network

– A group of computers in a building that usually access ﬁles from a server

M

MAC address

– A unique hardware address for devices on a Local Area Network

MDI

– Medium Dependent Interface is an Ethernet port for a connection to a straight-through cable

MDIX

- Medium Dependent Interface Crossover, is an Ethernet port for a connection to a crossover cable

Megabit

- Mb

Megabyte

- MB

Megabits per second

- Mbps

MIB

– Management Information Base is a set of objects that can be managed by using SNMP

MIMO

– Multiple-in Multiple-out

Modem

– A device that Modulates digital signals from a computer to an analog signal in order to transmit the

signal over phone lines.

It also Demodulates the analog signals coming from the phone lines to digital signals

for your computer

MPPE

– Microsoft Point-to-Point Encryption is used to secure data transmissions over PPTP connections

MTU

– Maximum Transmission Unit is the largest packet that can be transmitted on a packet-based network

like the Internet

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