D-Link DI-804 Manual de usuario

D-Link

DI-804

Broadband Router

User’s Manual

Rev.01 ( March,2001 )

6RDI804…01

Contents

Introduction................................................................................................4

Package Contents......................................................................................5

Introduction to Broadband Router Technology........................................6

Introduction to Firewalls ..........................................................................6

Introduction to Local Area Networking ...................................................7

Introduction to Virtual Private Networking..............................................8

Hardware Installation..............................................................................10

Placement ...............................................................................................10

Safety Precautions ..................................................................................10

Side Panel...............................................................................................10

Front Panel..............................................................................................11

Rear Panel...............................................................................................11

Basic DI-804 Configuration.....................................................................12

Start-up and Log in.................................................................................12

Main Page ...............................................................................................14

Setup Wizard ..........................................................................................15

Basic Setup .............................................................................................16

Internet Settings ..................................................................................17

Local Network Settings ......................................................................20

Specific Application Support..............................................................21

DMZ Control......................................................................................22

Advanced DI-804 Configuration.............................................................24

Open Ports..............................................................................................25

Port Redirection......................................................................................27

Advanced Filter/Firewall........................................................................29

General Setup .....................................................................................30

Set to Default Rules............................................................................31

Filter Rules Setup ...............................................................................31

System Management ................................................................................36

Passwords...............................................................................................37

Local/Remote Configuration..................................................................38

Unit Status ..............................................................................................39

Logs ........................................................................................................40

Diagnostics.............................................................................................41

Reboot.....................................................................................................43

Restore Default Settings.........................................................................43

TFTP Firmware Upload..........................................................................44

Telnet Terminal Commands ....................................................................47

Viewing Call Logs ..................................................................................47

Viewing PPP Logs ..................................................................................48

Viewing WAN Logs................................................................................48

Troubleshooting the DHCP Client on WAN...........................................49

Troubleshooting ........................................................................................50

Basic Functions ......................................................................................50

LAN Connection Problems ....................................................................52

ISP Connection Problems.......................................................................54

Internet Application Problems................................................................55

Performing a Factory Reset.....................................................................57

Using the PING Utility in Windows 95/98/Me ......................................58

Using the WINIPCFG Utility in Windows 95/98/Me ............................60

Technical Specifications ...........................................................................63

Key Features...........................................................................................64

D-Link Offices...........................................................................................65

Limited Warranty.....................................................................................66

Registration Card................................................................................74

Introduction

Congratulations on your purchases of the D-Link Broadband Router.

Your Broadband Router enables you to share your DSL or Cable Internet

connection with computers on your network. This guide will explain the

features and functions of the Broadband Router to help you get the most out

of your Internet experience.

D-Link’s Broadband Router allows LAN users to share a single

Internet Connection while providing the safety and security of port blocking,

packet filtering, and a natural firewall. Static address support, integrated

DHCP, PPPoE, and device name support will allow it to connect to nearly

any broadband provider whether Cable or DSL based, and at the same time

simplify local area network settings.

The Broadband Router provides two levels of security support. First, it

masks local users’ IP addresses from others on the Internet making it much

more difficult for a hacker to target a machine on your network. Secondly, it

can block and redirect certain ports to limit the services that outside users

can access. Specific ports can be opened to ensure that games and other

Internet applications will run properly.

The Broadband Router provides special pass through support for

common VPN implementations. The Virtual Server feature allows you to

expose HTTP, FTP, Game Servers and other local services to be accessible

to Internet users located outside of the LAN. The User-Definable

Application Sensing Tunnel feature allows you to define the attributes to

support special applications requiring multiple connections, such as Internet

gaming, video conferencing, and Internet telephony. A DMZ setting can be

applied to a single client behind the Broadband Router to expose it to the

Internet and ensure complete Internet application compatibility even if

specific ports are not known.

Unlike proxy server or NAT software that requires the software server

to remain visible on the Internet, no local computers are directly externally

visible when using the Broadband Router. Also the Broadband Router, like

broadband, is always on, removing the need to constantly boot a software

server when access is desired from a client.

Integrated DHCP services allow up to 253 users to get their IP address

automatically on boot up from the Broadband Router. Client machines

require no software, simply set them to accept a dynamically assigned IP

address and reboot. Each time they are powered up the Broadband Router

will recognize them and set their IP address to instantly connect them to the

LAN.

Package Contents

The D-Link DI-804 package should include the following items.

§DI-804 Broadband router

§User’s Manual

§Quick Install Guide

§Power Adapter

§CAT-5 UTP Cable

§Power Core

§Screws & Anvhors

§Rubber Feet

Introduction to Broadband Router Technology

A router is a device that forwards data packets from a source to a

destination. Routers work on OSI layer 3, which forwards data packets using

an IP addresses and not a MAC address. A router will forward data from the

Internet to a particular computer on your LAN.

The information that makes up the Internet gets moved around using

routers. When you click on a link on a web page, you send a request to a

server to show you the next page. The information that is sent and received

from your computer is moved from your computer to the server using

routers. A router also determines the best route that your information should

follow to ensure that the information is delivered properly.

A router controls the amount of data that is sent through your network

by eliminating information that should not be there. This provides security

for the computers behind your router because computers from the outside

can not access or send information directly to any computer on your network.

The router determines which computer the information should be forwarded

to and sends it. If the information is not intended for any computer on your

network, the data is discarded. This keeps any unwanted or harmful

information from accessing or damaging your network.

Introduction to Firewalls

A firewall is a device that sits between your computer and the Internet

that prevents unauthorizedaccess to or from your network. A firewall can be

a computer using firewall software or a special piece of hardware built

specifically to act as a firewall. In most circumstances, a firewall is used to

prevent unauthorized Internet users from accessing private networks such as

corporate LAN’s and Intranets.

A firewall watches all of the information moving to and from your

network and analyzes each piece of data. Each piece of data is checked

against a set of criteria that the administrator configures. If any data does not

meet the criteria, that data is blocked and discarded. If the data meets the

criteria, the data is passed through. This method is called packet filtering.

A firewall can also run specific security functions based on the type of

applicationor type of port that is being used. For example, a firewall can be

configured to work with an FTP or Telnet server. Or a firewall can be

configured to work with specific UDP or TCP ports to allow certain

applications or games to work properly over the Internet.

Introduction to Local Area Networking

Local Area Networking (LAN) is the term used when connecting

several computers together over a small area such as a building or group of

buildings. LAN’s can be connected over large areas. A collection of LAN’s

connected over a large area is called a Wide Area Network (WAN).

A LAN consists of multiple computers connected to each other. There

are many types of media that can connect computers together. The most

common media is CAT5 cable; UTP or STP twisted pair wire. On the other

hand, wireless networks do not use wires; instead they communicate over

radio waves. Each computer must have a Network Interface Card (NIC),

which communicates the data between computers. A NIC is usually a

10Mbps network card, 10/100Mbps network card, or a wireless network

card.

Most networks use hardware devices such as hubs or switches that each

cable can be connected to in order to continue the connection between

computers. A hub simply takes any data arriving through each port and

forwards the data to all other ports. A switch is more sophisticated, in that a

switch can determine the port that each piece of data is supposed to be

delivered to. A switch minimizes network traffic and speeds up the

communication over a network.

Networks take some time in order to plan and implement correctly.

There are many types of scenarios to consider which could affect the

operability of a network.

Introduction to Virtual Private Networking

Virtual Private Networking (VPN) uses a publicly wired network (the

Internet) to securely connect two different networks as if they were the same

network. For example, an employee can access the corporate network from

home using VPN, allowing the employee to access files and printers. Here

are several different implementations of VPN that can be used.

Point-to-Point Tunneling Protocol (PPTP)

PPTP uses proprietary means of connecting two private networks over the

Internet. PPTP is a way of securing the information that is communicated

between networks. PPTP secures information by encrypting the data inside

of a packet.

IP Security (IPSec)

IPSec provides a more secure network-to-network connection across the

Internet or a Wide Area Network (WAN). IPSec encrypts all communication

between the client and server whereas PPTP only encrypts the data packets.

Both of these VPN implementations are used because there is not a

standard for VPN server software. Because of this, each ISP or business can

implement their own VPN network making interoperability a challenge.

Hardware Installation

Placement

Your Broadband Router should be placed in a safe and secure location.

To ensure proper operation, please keep the unit away from water and other

damaging elements. Your Broadband Router can be mounted on a wall or a

shelf using the screw-holes located on the bottom of the unit. Self-adhesive

rubber feet are provided to stick on the bottom of the unit to protect the

surface where you have placed the unit.

Safety Precautions

§Please read the installation guide thoroughly before you install the

DI-804.

§The DI-804 should only be repaired by authorized and qualified

personnel.

§Please do not try to open or repair the DI-804 yourself.

§Do not place the DI-804 in a damp or humid location, i.e. a bathroom.

§The DI-804 should be placed in a sheltered and non-slip location within

a temperature range of +5 to +40 Celsius degree.

§Please keep the wrap bag of the DI-804 and the clip binding the cable out

of reach of children and babies to avoid choking.

§Please do not expose the DI-804 to direct sunlight or other heat sources.

The housing and electronic components may be damaged by direct

sunlight or heat sources.

Side Panel

The power port is located on the right-hand side of the DI-804. Connect the

AC adapter to this port to supply power.

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