D-Link Express Ethernetwork DI-704P User manual

DI-704P
Ethernet Broadband Router
User’s Manual
(Please refer to the Quick Install Guide for installation instructions.)

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Table of Contents
Introduction..................................................................................................4
Functions and Features.........................................................................4
Introduction to Broadband Router Technology....................................6
Introduction to Firewalls ......................................................................6
Introduction to Local Area Networking ...............................................7
Introduction to Virtual Private Networking..........................................7
Contents of Package .....................................................................................9
Panel Layout...............................................................................................10
Installation Requirements...................................................................11
Network Settings ........................................................................................12
Configuring the Ethernet Broadband Router..............................................14
Start-up and Log in.............................................................................14
Device Information.............................................................................16
Useful Tools........................................................................................17
Setup ...................................................................................................18
DHCP Server ......................................................................................21
Virtual Server......................................................................................22
Special Applications ...........................................................................23
Access Control....................................................................................24
Miscellaneous Items ...........................................................................25
MAC Address Control........................................................................26
Configuring on Unix based Platforms................................................27
Appendix A: Resetting the System Password or the IP Address .............28
Appendix B TCP/IP Configuration for Windows 95/98 ..........................29

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B.1 Install TCP/IP Protocol into Your PC..........................................29
B.2 Set TCP/IP Protocol for Working with the DI-704P ...................31
Technical Specifications.............................................................................38
Contacting Technical Support ....................................................................40
D-Link Locations Worldwide.....................................................................41
Limited Warranty........................................................................................43
Registration.................................................................................................47

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Introduction
Congratulations on your purchase of this outstanding Broadband Router. The
DI-704P is specifically designed for Small Office and Home Office needs. It
provides a complete solution for Internet surfing and office resources sharing, and
it is easy to configure and operate for even non-technical users. Instructions for
installing and configuring the DI-704P can be found in the enclosed “Quick
Install Guide.” Before you install and use the DI-704P, please read this manual
carefully for more detailed information and to fully utilize its functions.
Functions and Features
lBroadband modem and IP sharing
Connects multiple computers to a broadband (cable or DSL) modem to
surf the Internet.
lAuto-sensing Ethernet Switch
Equipped with a 4-port auto-sensing Ethernet switch.
lVPN supported
Supports multiple PPTP sessions and allows you to setup VPN server
and VPN clients.
lPrinter sharing (Optional)
Embeds a print server to allow all of the networked computers to share
one printer.
lFirewall
All unwanted packets from outside intruders are blocked to protect your
network.
lDHCP server supported
All of the networked computers can retrieve TCP/IP settings
automatically from the DI-704P.
lWeb-based configuring
Configurable through any networked computer’s web browser using
Netscape or Internet Explorer.

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lAccess Control supported
Allows you to assign different access rights for different users.
lVirtual Server supported
Enables you to expose WWW, FTP and other services on your LAN to
be accessible to Internet users.
lUser-Definable Application Sensing Tunnel
User can define the attributes to support the special applications
requiring multiple connections, like Internet gaming, video conferencing,
Internet telephony and so on; then the DI-704P can sense the application
type and open a multi-port tunnel for it.
lDMZ Host supported
Allows a networked computer to be fully exposed to the Internet; this
function is used when the special “application-sensing tunnel feature”is
insufficient to allow an application to function correctly.

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Introduction to Broadband Router Technology
A router is a device that forwards data packets from a source to a destination.
Routers forward data packets using 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 connected to your router, because computers from the outside cannot
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 unauthorized access 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 or 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
application or 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.

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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. ANIC is usually a 10Mbps network card, or
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
destination port for a specific piece of data. A switch minimizes network traffic
overhead and speeds up the communication over a network.
Networks take some time in order to plan and implement correctly. There
are many ways to configure your network. You may want to take some time to
determine the best network set-up for your needs.
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.

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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 its
own VPN network making interoperability a challenge.

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Contents of Package
DI-704P Ethernet Broadband Router
Installation CD-ROM
Power cord and power adapter
CAT-5 UTP Fast Ethernet Cable
DIDI--704P704P
Ethernet BEthernet Broadband Routerroadband Router

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PanelLayout
Front Panel
M1&M2 System status indicators, Orange
. M1 is flashed once per second to
indicate system is active. When system is busy, M2 is lighted.
WAN & LAN Ethernet port indicators, Green. The LED fl
ickers when the LAN or WAN
port is sending or receiving data.
Link/Act. Link status indicators, Green
. The LED flickers when the corresponding
port is sending or receiving data
10/100 10/100 status indicators, Green
. The LED flickers when the
corresponding port is transmitting or receiving data in 10 or 100Mbps.
Side Panel
RESET To reset system settings to factory defaults, please follow the steps:
1. Power off the device
2. Press the reset button and hold
3. Power on the device
4. Keep the button pressed about 5 seconds
5. Release the button
6. Watch the M1 and M2 LEDs, they will flash 8 times and then the
M1 will flash once per second
POWER Power port. Connect one end of your included power adapter to the
power port and the other end into your power outlet
Note: The included power adapter is DC 5V/1A. Using the wrong type of
power adapter may cause product damage.