D-Link DGL-4300 Router Manual PDF (Setup & Configuration Guide)

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Using the Conﬁguration Interface

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D-Link Systems, Inc.

4.

Changing the Wireless Network Name (SSID - used for wireless devices only)

It is always a good idea to change the wireless network name (SSID) from the default value.

Leaving

it in the default state is usually a good indication to intruders that all settings (including security) are

probably defaults. This setting identiﬁes your wireless network. Make sure that the name you choose

is not commonly known or something that is easy to guess. Try using a combination of letters and

numbers to add complexity to it.

5.

Set the Visibility Status to Invisible

Wireless routers typically broadcast the wireless network name (SSID) to users attempting to connect

to a wireless network. By setting the Visibility Status to Invisible, all devices attempting to connect to

the router will need to know the wireless network name (SSID) in order to connect.

6.

Enable WPA Personal or Enterprise

Along with changing the wireless network name and setting the visibility status to invisible, we highly

recommended that you enable some sort of encryption feature. There are different methods of securing

wireless transmissions, but the most effective is WPA-Personal and WPA-Enterprise.

WPA-Personal

is easier to conﬁgure but does not offer the extensive level of security that WPA Enterprise does. If

you have the infrastructure to support WPA Enterprise, we recommend that you use this method. If

not, then WPA-Personal will sufﬁce.

7.

Set up MAC Filtering

Each networking device (router, access point, wireless card, etc.) on a network contains a unique

hexadecimal number that identiﬁes that speciﬁc product.

This number is referred to as a MAC

address.

MAC ﬁltering allows you to create a list of the MAC address of each device on your network

and only allows these speciﬁc devices to associate with your network. With this feature enabled,

devices attempting to connect to your network with a MAC address that is not in the list you created,

will be denied access.

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Appendix

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D-Link Systems, Inc.

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

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Appendix

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D-Link Systems, Inc.

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

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

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Appendix

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D-Link Systems, Inc.

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

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

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Appendix

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D-Link Systems, Inc.

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

H

H.323 –

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

videoconferencing devices

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