3COM 3CRWE754G72-A, WL-540B, 3CRWE754G72-B, WL-540A User Manual
OfficeConnect ADSL Wireless 11g
Firewall Router
User Guide
3CRWE754G72-A
3CRWE754G72-B
WL-540A
WL-540B
http://www.3com.com/
Part No. DUA-0075-4AAA01
Rev. 01
Published January 2004
3Com Corporation
350 Campus Drive,
Marlborough, MA
USA 01752-3064
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CONTENTS
ABOUT THIS GUIDE
Naming Convention 7
Conventions 8
Feedback about this User Guide 8
Related Documentation 9
1 INTRODUCING THE ROUTER
OfficeConnect ADSL Wireless11g Firewall Router 11
Router Advantages 13
Package Contents 13
Minimum System and Component Requirements 14
Front Panel 14
Rear Panel 15
2 HARDWARE INSTALLATION
Introduction 17
Safety Information 17
Positioning the Router 17
Using the Rubber Feet 18
Powering Up the Router 18
Connecting the Router 18
3 SETTING UP YOUR COMPUTERS
Obtaining an IP Address Automatically 23
Windows 2000 23
Windows XP 25
Windows 95/98/ME 25
Macintosh 25
Disabling PPPoE and PPTP Client Software 26
Disabling Web Proxy 26
4 RUNNING THE SETUP WIZARD
Accessing the Wizard 27
29
DSL Settings 29
Summary 33
5 ROUTER CONFIGURATION
Navigating Through the Router Configuration Pages 35
Main Menu 35
Status Screen 35
Status 36
LAN Setup 36
LAN Settings 37
DHCP Clients List 38
Wireless 39
Configuring Wireless 39
Encryption 40
Disabled 41
WPA-PSK (no server) 41
128-bit WEP 42
64-bit WEP 42
WPA (with RADIUS Server) 43
Internet Settings 44
Connection Type 44
PPPoE 45
PPPoA 46
Bridged Mode for Single PC 47
Routing Mode over ATM 47
DNS 48
Routing 48
Static Routes 49
RIP Parameters 49
Routing Table 50
Firewall 51
Special Applications 52
Virtual Servers 53
Client IP Filters 54
Access Control 54
URL Blocking 56
Schedule Rule 57
MAC Address Filtering 59
DMZ 60
Advanced 60
SNMP 63
SNMP Community 63
SNMP Trap 64
System Tools 65
Restart Router 65
Reset to Factory Default 65
Backup/Restore Settings 66
Upgrade 66
Admin Password 67
Time and Time Zone 68
Status and Logs 69
ADSL Status 69
Logs 69
6 TROUBLESHOOTING
Basic Connection Checks 71
Browsing to the Router Configuration Screens 71
Connecting to the Internet 72
Forgotten Password and Reset to Factory Defaults 72
Wireless Networking 73
Recovering from Corrupted Software 74
Frequently Asked Questions 75
A IP ADDRESSING
The Internet Protocol Suite 77
Managing the Router over the Network 77
IP Addresses and Subnet Masks 77
How does a Device Obtain an IP Address and Subnet Mask? 79
DHCP Addressing 79
Static Addressing 79
Auto-IP Addressing 79
B TECHNICAL SPECIFICATIONS
OfficeConnect ADSL Wireless 11g Firewall Router 81
Standards 82
C SAFETY INFORMATION
D END USER SOFTWARE LICENSE AGREEMENT
D OBTAINING SUPPORT FOR YOUR PRODUCT
Register Your Product to Gain Service Benefits 91
Purchase Value-Added Services 91
Troubleshoot Online 91
Access Software Downloads 92
Contact Us 92
Telephone Technical Support and Repair 92
GLOSSARY
INDEX
REGULATORY NOTICES FOR THE OFFICECONNECT ADSL
IRELESS 11G FIREWALL ROUTER
W
ABOUT THIS GUIDE
This guide describes how to install and configure the OfficeConnect ADSL
Wireless 11g Firewall Router (3CRWE754G72-A/B).
This guide is intended for use by those responsible for installing and
setting up network equipment; consequently, it assumes a basic working
knowledge of LANs (Local Area Networks) and Internet Routers.
If a release note is shipped with the ADSL 11g Wireless Router and
contains information that differs from the information in this guide,
follow the information in the release note.
Most user guides and release notes are available in Adobe Acrobat
Reader Portable Document Format (PDF) on the 3Com World Wide Web
site:
http://www.3com.com
Naming Convention Throughout this guide, the OfficeConnect ADSL Wireless 11g Firewall
Router is referred to as the “Router”.
Category 3 and Category 5 Twisted Pair Cables are referred to as Twisted
Pair Cables throughout this guide.
8 ABOUT THIS GUIDE
Conventions Ta bl e 1 and Tab le 2 list conventions that are used throughout this guide.
Ta b le 1 Notice Icons
Icon Notice Type Description
Information note Information that describes important features or
instructions.
Caution Information that alerts you to potential loss of data or
potential damage to an application, system, or device.
Feedback about this
User Guide
Warning Information that alerts you to potential personal
injury.
Ta b l e 2 Text Conventions
Convention Description
The words “enter”
and “type”
When you see the word “enter” in this guide, you must type
something, and then press Return or Enter. Do not press
Return or Enter when an instruction simply says “type.”
Keyboard key names If you must press two or more keys simultaneously, the key
names are linked with a plus sign (+). Example:
Press Ctrl+Alt+Del
Words in italics Italics are used to:
■ Emphasize a point.
■ Denote a new term at the place where it is defined in the
text.
■ Identify menu names, menu commands, and software
button names. Examples:
From the Help menu, select Contents.
Click OK.
Your suggestions are very important to us. They will help make our
documentation more useful to you. Please e-mail comments about this
document to 3Com at:
pddtechpubs_comments@3com.com
Please include the following information when commenting:
■ Document title
■ Document part number (on the title page)
■ Page number (if appropriate)
Conventions 9
Example:
■ OfficeConnect ADSL Wireless 11g Firewall Router User Guide
■ Part Number DUA0075-4AAA01
■ Page 24
Do not use this e-mail address for technical support questions. For
information about contacting Technical Support, please refer to the
Support and Safety Information sheet.
Related
Documentation
In addition to this guide, each Router document set includes one
Installation Guide. This guide contains the instructions you need to install
and configure your Router.
10 ABOUT THIS GUIDE
1
INTRODUCING THE ROUTER
Welcome to the world of networking with 3Com®. In the modern
business environment, communication and sharing information is crucial.
Computer networks have proved to be one of the fastest modes of
communication but, until recently, only large businesses could afford the
networking advantage.
OfficeConnect ADSL Wireless11g Firewall Router
The OfficeConnect ADSL Wireless11g Firewall Router is designed to
provide a cost-effective means of sharing a single broadband Internet
connection amongst several wired and wireless computers. The Router
also provides protection in the form of an electronic “firewall” preventing
anyone outside of your network from seeing your files or damaging your
computers. The Router can also prevent your users from accessing Web
sites which you find unsuitable.
Figure 1
only one computer is connected to the Internet. This computer must
always be powered on for the other computers on the network to access
the Internet.
shows an example network without a Router. In this network,
12 CHAPTER 1: INTRODUCING THE ROUTER
Figure 1 Example Network Without a Gateway
When you use the Router in your network (Figure 2), it becomes your
connection to the Internet. Connections can be made directly to the
Router, or to an OfficeConnect Switch or Hub, expanding the number of
computers you can have in your network.
Figure 2 Example Network Using a Wireless DSL Router
Router Advantages The advantages of the Router include:
■ Shared Internet connection for both wired and wireless computers
■ High speed 802.11g wireless networking
■ No need for a dedicated, “always on” computer serving as your
Internet connection
■ Cross-platform operation for compatibility with Windows, Unix and
Macintosh computers
■ Easy-to-use, Web-based setup and configuration
■ Provides centralization of all network address settings (DHCP)
■ Acts as a Virtual server to enable remote access to Web, FTP, and other
services on your network
■ Security — Firewall protection against Internet hacker attacks and
encryption to protect wireless network traffic
Package Contents The Router kit includes the following items:
Router Advantages 13
■ One OfficeConnect ADSL Wireless11g Firewall Router
■ One power adapter for use with the Router
■ Four rubber feet
■ One Telephone Cable
■ One CD-ROM containing this User Guide
■ Installation Guide
■ One Support and Safety Information Sheet
■ One Warranty Flyer
If any of these items are missing or damaged, please contact your retailer.
14 CHAPTER 1: INTRODUCING THE ROUTER
Minimum System and Component Requirements
Your Router requires that the computer(s) and components in your
network be configured with at least the following:
■ A computer with an operating system that supports TCP/IP
networking protocols (for example Windows 95/98/NT/Me/2000/XP,
Unix, Mac OS 8.5 or higher).
■ An Ethernet 10Mbps or 10/100 Mbps NIC for each computer to be
connected to the four-port switch on your Router.
■ An 802.11b or 802.11g wireless NIC.
■ An active ADSL subscription and connection.
■ A Web browser that supports JavaScript, such as Netscape 4.7 or
higher, Internet Explorer 5.0 or higher, or Mozilla 1.2.1 or higher.
Front Panel The front panel of the Router contains a series of indicator lights (LEDs)
that help describe the state of various networking and connection
operations.
Figure 3 Router - Front Panel
1
2 4
3
5
DSL LAN Status
Power SYNC Online WLAN 1 2 3 4
Green = Link, Flash = Activity
OfficeConnect ADSL Wireless 11g Firewall Router
3CRWE754G72-A
1Power LED
Green
Indicates that the Router is powered on.
2 DSL Sync LED
Green
If the LED is on it indicates that DSL connection is present. This LED’s
flashes during configuration at power up.
3DSL Online LED
Green
Rear Panel 15
If this LED illuminates successful Username/Password has been
authenticated with your ISP.
4 Wireless LAN (WLAN) Status LED
Green
If the LED is on it indicates that wireless networking is enabled. If the LED
is flashing, the link is OK and data is being transmitted or received. If the
LED is off, the Wireless LAN has been disabled in the Router, or there is a
problem. Refer to Chapter 6
“Troubleshooting”.
5 Four LAN Status LEDs
Green (100Mbps link / 10Mbps link)
If the LED is on, the link between the port and the next piece of network
equipment is OK. If the LED is flashing, the link is OK and data is being
transmitted or received. If the LED is off, nothing is connected, or the
connected device is switched off, or there is a problem with the
connection (refer to Chapter 6
“Troubleshooting”). The port will
automatically adjust to the correct speed and duplex.
Rear Panel The rear panel (Figure 4) of the Router contains four LAN ports, one ADSL
port, a reset button, and a power adapter socket.
Figure 4 Router - Rear Panel
7 98 106
12 VDC
1A MAX
4 3 2 1
LAN
6 Wireless Antennae
The antennae on the product should be placed in a ‘V’ position when
initially installed.
CAUTION: Do not force the antennae beyond their mechanical stops.
Rotating the antennae further may cause damage.
7 Ethernet Ports
Using suitable RJ45 cables, you can connect your Router to a computer,
or to any other piece of equipment that has an Ethernet connection (for
RESET
ADSL
16 CHAPTER 1: INTRODUCING THE ROUTER
example, a hub or a switch). These ports have an automatic MDI/MDIX
feature, which means either straight-through or a crossover cable can be
used.
8 Reset Button
If you want to reset your Router to factory default settings, and cannot
access the web management interface (for example, due to a lost
password), then you may use this button. Refer to “Forgotten Password
and Reset to Factory Defaults” on page 72 for further details.
9 Power Adapter Socket
Only use the power adapter that is supplied with this Router. Do not use
any other adapter.
10 ADSL Port
Using the RJ11 cable provided, you should connect your Router to the
telephone socket via a splitter.
HARDWARE INSTALLATION
2
Introduction This chapter will guide you through a basic installation of the Router,
including:
■ Connecting the Router to the Internet.
■ Connecting the Router to your network.
■ Setting up your computers for networking with the Router.
Safety Information
Positioning the Router
WARNING: Please read the “Safety Information”
before you start.
VORSICHT: Bitte lesen Sie den Abschnitt “Wichtige Sicherheitshinweise”
sorgfältig durch, bevor Sie das Gerät einschalten.
AVERTISSEMENT: Veuillez lire attentivement la section “Consignes
importantes de sécurité” avant de mettre en route.
You should place the Router in a location that:
■ is conveniently located for connection to the telephone socket.
■ is centrally located to the wireless computers that will connect to the
Router. A suitable location might be on top of a high shelf or similar
furniture to optimize wireless connections to computers in both
horizontal and vertical directions, allowing wider coverage.
■ allows convenient connection to the computers that will be connected
to the four LAN ports on the rear panel, if desired.
■ allows easy viewing of the front panel LED indicator lights, and access
to the rear panel connectors, if necessary.
section in Appendix C
18 CHAPTER 2: HARDWARE INSTALLATION
When positioning your Router, ensure:
■ It is out of direct sunlight and away from sources of heat.
■ Cabling is away from power lines, fluorescent lighting fixtures, and
sources of electrical noise such as radios, transmitters and broadband
amplifiers.
■ Water or moisture cannot enter the case of the unit.
■ Air flow around the unit and through the vents in the side of the case
is not restricted. 3Com recommends you provide a minimum of
25 mm (1 in.) clearance.
Using the Rubber
Powering Up the Router
Connecting the Router
Use the four self-adhesive rubber feet to prevent your Router from
Feet
moving around on your desk or when stacking with flat top units. Only
stick the feet to the marked areas at each corner of the underside of your
Router.
To power up the Router:
1 Plug the power adapter into the power adapter socket located on the
back panel of the Router.
2 Plug the power adapter into a standard electrical wall socket.
The first step for installing your Router is to physically connect it to the
telephone socket and then connect it to a computer in order to be able to
access the Internet. See Figure 5
:
Connecting the Router 19
Figure 5 Connecting the Gateway
Power
Supply Unit
Your PC
ADSL 11g Wireless Router
Wireless
Users
Internet
3 Run the provided telephone cable from the wall jack providing ADSL
service to the ADSL port on your ADSL Router. When inserting an ADSL
RJ-11 plug, be sure the tab on the plug clicks into position to ensure that
it is properly seated. If you are using splitterless ADSL service, add
low-pass filters between the ADSL wall jack and your telephones. (These
filters pass voice signals through but filter data signals out.)
Either:
If you are using a full-rate (G.dmt) connection, your service provider will
attach the outside ADSL line to a data/voice splitter. In this case you can
connect your phones and computer directly to the splitter as shown
below (Figure 6
):
20 CHAPTER 2: HARDWARE INSTALLATION
Figure 6 Installing with a splitter
or
If you are using a splitterless (G.lite) connection, then your service
provider will attach the outside ADSL line directly to your phone system.In
this case you can connect your phones and computer directly to the
incoming ADSL line, but you will have to add low-pass filters to your
phones as shown below (Figure 7
):
Figure 7 Installing without a splitter
Connecting the Router 21
You have now completed the hardware installation of your Router. Next
you need to set up your computers so that they can make use of the
Router to communicate with the Internet.
3Com recommends that you perform the initial Router configuration
from a computer that is directly connected to one of the LAN ports.
If you configure the Router from a wireless computer, note that you may
lose contact with the Router if you change the wireless configuration.
To communicate wirelessly with your Router, your wireless NIC should be
set as follows:
■ Encryption — none
■ SSID — 3Com
■ Channel — 11
22 CHAPTER 2: HARDWARE INSTALLATION
3
Obtaining an IP Address Automatically
Windows 2000 If you are using a Windows 2000-based computer, use the following
SETTING UP YOUR COMPUTERS
The Router has the ability to dynamically allocate network addresses to
the computers on your network, using DHCP. However, your computers
need to be configured correctly for this to take place. To change the
configuration of your computers to allow this, follow the instructions in
this chapter.
procedure to change your TCP/IP settings:
1 From the Windows Start Menu, select Settings > Control Panel.
2 Double click on Network and Dial-Up Connections.
3 Double click on Local Area Connection.
4 Click on Properties.
5 A screen similar to Figure 8
TCP/IP and click on Properties.
should be displayed. Select Internet Protocol
24 CHAPTER 3: SETTING UP YOUR COMPUTERS
Figure 8 Local Area Properties Screen
6 Ensure that the options Obtain an IP Address automatically, and Obtain
DNS server address automatically are both selected as shown in Figure 9
Click OK.
.
Figure 9 Internet Protocol (TCP/IP) Properties Screen
7 Restart your computer.
Windows XP
Windows 95/98/ME
Obtaining an IP Address Automatically 25
1 From the Windows Start menu, select Control Panel.
2 Click on Network and Internet Connections.
3 Click on the Network Connections icon.
4 Double click on LAN or High Speed Connection icon. A screen titled Local
Area Connection Status will appear.
5 Select Internet Protocol TCP/IP and click on Properties.
6 Ensure that the options Obtain an IP Address automatically, and Obtain
DNS servers automatically are both selected. Click OK.
7 Restart your computer.
1 From the Windows Start Menu, select Settings > Control Panel.
2 Double click on Network. Select the TCP/IP item for your network card
and click on Properties.
3 In the TCP/IP dialog, select the IP Address tab, and ensure that Obtain IP
address automatically is selected. Click OK.
Macintosh If you are using a Macintosh computer, use the following procedure to
change your TCP/IP settings:
1 From the desktop, select Apple Menu, Control Panels, and TCP/IP.
2 In the TCP/IP control panel, set Connect Via: to “Ethernet”.
3 In the TCP/IP control panel, set Configure: to “Using DHCP Server.”
4 Close the TCP/IP dialog box, and save your changes.
5 Restart your computer.
26 CHAPTER 3: SETTING UP YOUR COMPUTERS
Disabling PPPoE and PPTP Client Software
If you have PPPoE client software installed on your computer, you will
need to disable it. To do this:
1 From the Windows Start menu, select Settings > Control Panel.
2 Double click on Internet Options.
3 Select the Connections Tab. A screen similar to Figure 10
displayed.
4 Select the Never Dial a Connection option.
Figure 10 Internet Properties Screen
should be
Disabling Web Proxy
You may wish to remove the PPPoE client software from your computer
to free resources, as it is not required for use with the Router.
Ensure that you do not have a web proxy enabled on your computer.
Go to the Control Panel and click on Internet Options. Select the
Connections tab and click LAN Settings at the bottom. Make sure that
the Use Proxy Server option is unchecked.
4
RUNNING THE SETUP WIZARD
Accessing the Wizard
The Router setup program is Web-based, which means that it is accessed
through your Web browser (Netscape Navigator 4.7 or higher, Internet
Explorer 5.0 or higher, or Mozilla 1.2.1 or higher).
To use the Setup Wizard:
1 Ensure that you have at least one computer connected to the Gateway.
Refer to Chapter 2
2 Launch your Web browser on the computer.
3 Enter the following URL in the location or address field of your browser:
http://192.168.1.1 (Figure 11
Figure 11 Web Browser Location Field (Factory Default)
4 To log in as an administrator, enter the password (the default password is
admin) in the Password field and click Log in (Figure 12
for details on how to do this.
). The Login screen displays.
).
28 CHAPTER 4: RUNNING THE SETUP WIZARD
Figure 12 Router Login Screen
5 When you have logged in either:
■ The Status screen will appear (Figure 13). Select Wizard from the
menu.
or
■ If your Router has not been configured before, the Wizard will launch
automatically (refer to Figure 14
).
6 You will be guided step by step through a basic setup procedure.
Figure 13 Status Screen
Accessing the Wizard 29
DSL Settings Figure 14 DSL Settings Screen
30 CHAPTER 4: RUNNING THE SETUP WIZARD
The DSL Mode window allows you to set up the Router for the type of
Internet connection you have. Before setting up your DSL connection
mode, have your account information from your ISP ready.
Select a DSL mode from the following:
■ PPPoE see page 30
■ PPPoA see page 31
■ RFC1483 Bridged see page 32
■ RFC1483 Routed see page 31
and click Next.
For further information on selecting a mode see “Internet Settings”
page 44
.
PPPoE Mode
Figure 15 PPPoE Screen
on
To setup the router for use with a PPP over Ethernet (PPPoE) connection,
use the following procedure:
1 Enter your PPP over Ethernet user name in the Username text box.
2 Enter your PPP over Ethernet password in the Password text box.
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