3Com WL522 User Manual
Wireless 11n Cable/DSL Firewall Router
User Guide
WL-602
3CRWER300-73
http://www.3Com.com/
Part No. 10016790 Rev. AA
Published July 2008
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 9
Related Documentation 9
INTRODUCING THE ROUTER
Wireless 11n Cable/DSL Firewall Router 11
Router Advantages 13
Package Contents 13
Minimum System and Component Requirements 14
Physical Features 14
INSTALLING THE ROUTER
Introduction 19
Safety Information 19
Positioning the Router 19
Using the Rubber Feet 20
Wall Mounting 20
Mounting Instructions for Cement Walls 20
Mounting Instructions for Wood Walls 21
Powering Up the Router 21
Connecting the Router 21
SETTING UP YOUR COMPUTERS
Obtaining an IP Address Automatically 23
Windows 2000 23
Windows Vista 25
Windows XP 26
Macintosh 26
Disabling PPPoE and PPTP Client Software 27
Disabling Web Proxy 27
RUNNING THE SETUP WIZARD
Accessing the Router using the 3Com Detect Application 29
Running the 3Com Detect Application 29
Accessing the Setup Wizard 31
Wizard -
Change Password 34
Wizard -
Time and Time Zone 35
Wizard -
Connection Type 36
Setup Wizard - LAN Settings 42
Wizard - Wireless Setting 43
Wizard - Configuration Summary 49
CONFIGURING THE ROUTER
Navigating Through the Router Configuration screens 51
Main Menu 51
Welcome Screen 51
Status 51
LAN Settings 52
LAN Settings 52
DHCP Clients List 53
Wireless Settings 55
Configuration 56
Encryption 57
WPS 62
Connection Control 64
Client List 65
WMM 65
WDS 68
Advanced 71
Internet Settings 73
WAN 73
DNS 79
Clone MAC address 80
Firewall 81
SPI 81
Special Applications 85
Virtual Servers 86
DMZ 87
PC Privileges 88
Schedule Rule 90
URL Filter 91
Advanced 92
Security 92
VLAN 95
Static Routes 97
RIP 99
DDNS 101
SNMP 102
Syslog 103
Proxy ARP 104
QoS Settings 105
Tra ffi c m ap pi ng 106
VPN 108
System Tools 115
Restart Router 115
Configuration 115
Upgrade 116
Time Zone 117
Ping 118
Traceroute 119
DNS Lookup 120
Diagnostic 120
Status and Logs 121
Status 121
Routing Table 122
Logs 122
Traffic Statistics 123
Support/Feedback 124
Support 124
Feedback 124
TROUBLESHOOTING
Basic Connection Checks 125
Browsing to the Router Configuration Screens 126
Connecting to the Internet 127
Forgotten Password and Reset to Factory Defaults 127
Wireless Networking 128
Recovering from Corrupted Software 130
Power Adapter 130
Frequently Asked Questions 132
IP ADDRESSING
The Internet Protocol Suite 133
Managing the Router over the Network 133
IP Addresses and Subnet Masks 133
How does a Device Obtain an IP Address and Subnet Mask? 135
DHCP Addressing 135
Static Addressing 135
Auto-IP Addressing 135
TECHNICAL SPECIFICATIONS
3Com Wireless 11n Cable/DSL Firewall Router 137
Standards 139
SAFETY INFORMATION
END USER SOFTWARE LICENSE AGREEMENT
OBTAINING SUPPORT FOR YOUR 3COM PRODUCTS
Register Your Product to Gain Service Benefits 148
Solve Problems Online 148
Purchase Extended Warranty and Professional Services 148
Access Software Downloads 149
Contact Us 149
Telephone Technical Support and Repair 149
GLOSSARY
REGULATORY NOTICES
INDEX
ABOUT THIS GUIDE
This guide describes how to install and configure the 3Com Wireless 11n
Cable/DSL Firewall Router (3CRWER300-73).
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 3Com Wireless 11n Cable/DSL
Firewall 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 3Com Wireless 11n Cable/DSL Firewall Router
is referred to as the “Router”.
Category 3, Category 5, and Category 6 Twisted Pair Cables are referred
to as Twisted Pair Cables throughout this guide.
8 ABOUT THIS GUIDE
Conventions Tab l e 1 and Ta bl e 2 list conventions that are used throughout this guide.
Tab l e 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.
Warning Information that alerts you to potential personal
injury.
Tab l e 2 Text Conventions
Convention Description
The words “enter”
and “type”
Keyboard key names If you must press two or more keys simultaneously, the key
Words in italics Italics are used to:
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.”
names are linked with a plus sign (+). Example:
Press Ctrl+Alt+Del
■ 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.
Feedback About This User Guide 9
Feedback About
This User Guide
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)
Example:
■ 3Com Wireless 11n Cable/DSL Firewall Router User Guide
■ Part Number 10016790 Rev. AA
■ Page 24
Do not use this e-mail address for technical support questions. For
information about contacting Technical Support, please refer to
Appendix E.
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.
Wireless 11n
Cable/DSL Firewall
Router
The 3Com Wireless 11n Cable/DSL 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 shows an example network without a Router. In this network,
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.
12 CHAPTER 1: INTRODUCING THE ROUTER
Figure 1 Example Network Without a Router
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 a 3Com Switch, expanding the number of computers you
can have in your network.
Figure 2 Example Network Using a Firewall Router
Router Advantages The advantages of the Router include:
■ Shared Internet connection for both wired and wireless computers
■ High speed 802.11n 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
Router Advantages 13
Package Contents The Router kit includes the following items:
■ One 3Com Wireless 11n Cable/DSL Firewall Router
■ One power adapter for use with the Router
■ Four rubber feet
■ One Ethernet cable
■ One CD-ROM containing this User Guide, copies of the quick install
guide in various languages and the 3Com Detect application.
■ Installation guide
■ Support and Safety sheet
■ Warranty sheet
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 2000/XP/Vista, Unix,
Mac OS 8.5 or higher).
■ An Ethernet 10 Mbps, 10/100 Mbps or 10/100/1000 Mbps NIC for
each computer to be connected to the four-port switch on your
Router.
■ An 802.11b, 802.11g or 802.11n draft2.0 compliant wireless NIC.
■ An active ADSL or Cable subscription and connection. Note that your
Cable or ADSL modem needs to have an Ethernet interface.
■ A Web browser that supports JavaScript, such as Netscape 4.7 or
higher, Internet Explorer 6.0 or higher, Mozilla 1.2.1 or higher, or
Apple’s Safari.
Physical Features 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
Physical Features 15
1 Power LED (Illuminated Logo)
White
The 3Com logo serves as power OK indicator. This LED will light if the
router is receiving power from the power adapter. If it is not lit check the
power adapter connections. Refer to Chapter 6 Troubleshooting
.
2 Alert LED
Amber
Fast flash during self test. If self test fails the LED will remain on.
Fast flash during software upgrade.
Fast flash for software reset to the factory defaults.
Fast flash for hardware reset to the factory defaults.
The LED is on for 2 seconds when the firewall detects a hacker attack.
3Cable/DSL
Blue
LED on indicates the physical connection is on.
Fast flash means WAN port traffic activity.
4 Wireless LAN (WLAN) Status LED
Blue
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 LAN Status LEDs (4 indicators)
Blue
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.
16 CHAPTER 1: INTRODUCING THE ROUTER
6 WPS LED
Blue
WiFi Protected Setup (WPS) is a standard for easy and secure
establishment of a wireless network, allowing wireless clients to connect
securely to routers and access points. The WPS LED shows the status of
the WPS function. It has a number of modes to help monitor the status of
clients connecting to the Router using the WPS protocol. The status is
shown by three different flashing rates: slow, medium and quick and
when light constantly.
Note: The WPS function will be enabled for 2 minutes once WPS is
enabled either by pressing the button or by starting the PIN mode via the
web interface. This time will end before 2 minutes if a client has
successfully connected. Only one client should be connected to the
Router using WPS at any one time. Attempting to connect two or more
clients at once may result in connection failures.
When the WPS button is pressed, or WPS is initiated using the PIN
method in the web interface, the WPS LED will flash at a medium rate for
up to 2 minutes to indicate that a WPS connection can be made. When a
connection attempt is underway, the LED will flash slowly.
If the connection has been successful, the WPS LED will remain
illuminated for 5 minutes. If the connection attempt has failed, the WPS
LED will flash rapidly for 5 minutes. You can re-try the connection by
pressing the WPS button, when the connection process will re-start.
If you want to add a further client to the Router, you do not need to wait
for the 5 minute period to end. You can press the WPS button (or use the
PIN method via the web interface) as soon as the first client is successfully
connected.
Physical Features 17
The rear panel (Figure 4) of the Router contains one WPS button, four
LAN ports, one WAN port, one WiFi on/off button, a reset button, and a
power adapter socket.
Figure 4 Router - Rear Panel
1 Wireless Antenna
The antennas 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.
2 WPS button
Press this button for 3 seconds when making WPS setup. Pushing the
WPS button will automatically enable WPS. Then initiate the WPS
procedure on the wireless NIC within two minutes. Refer to your wireless
NIC's documentation on this procedure. The wireless NIC will then be
securely added to your wireless network.
3 Ethernet Ports (4 ports)
Using suitable RJ-45 cables, you can connect your Router to a computer,
or to any other piece of equipment that has an Ethernet connection (for
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.
18 CHAPTER 1: INTRODUCING THE ROUTER
4WAN Port
RJ-45 port used to connect the Router with Cable/DSL modem.
5 WiFi On/Off button
Use this button to turn on/turn off the wireless function. Press the button
for 3 seconds.
6 Reset Button
If you want to reset your Router to factory default settings, or 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 127 for further details.
7 Power Adapter Socket
Only use the power adapter that is supplied with this Router. Do not use
any other adapter.
INSTALLING THE ROUTER
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 Please note the following:
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 external ADSL or Cable
modem.
■ 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 LED indicator lights, and access to the rear
panel connectors, if necessary.
section in Appendix C
20 CHAPTER 2: INSTALLING THE ROUTER
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
Feet
Use the four self-adhesive rubber feet to prevent your Router from
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.
Please be careful when you put 3COM Router on top of another unit, if
the unit underneath is hot, this may impact the reliability of 3Com Router.
Wall Mounting There are two slots on the underside of the Router that can be used for
wall mounting. The Router must be mounted with the LEDs facing
upwards.
When wall mounting the unit, ensure it is within reach of the power
outlet. When wall mounting the unit, ensure that the rubber feet are not
fixed.
Mounting
Instructions for
Cement Walls
To wall mount the unit:
1 Make two holes 100 mm (3.9 in.) apart and insert two nylon or similar
screw anchors that are suitable for the wall construction.
2 Fix two suitable screws into the anchors, leaving their heads 3 mm (0.12
in.) clear of the wall surface. The screws should be at least 30 mm (1.2
in.) long.
3 Remove any connections in the Router and locate it over the screw heads.
When in line, gently push the Router on to the wall and move it
downwards to secure.
Powering Up the Router 21
Mounting
Instructions for Wood
Walls
Powering Up the
Router
To wall mount the unit:
1 Make two holes 100 mm (3.9 in.) apart.
2 Fix two suitable screws directly into the wall, leaving their heads 3 mm
(0.12 in.) clear of the wall surface. The screws should be at least 20 mm
(0.75 in.) long.
3 Remove any connections in the Router and locate it over the screw heads.
When in line, gently push the Router on to the wall and move it
downwards to secure.
CAUTION: When making connections, be careful not to push the Router
up and off the wall.
To power up the Router:
1 Plug the power adapter into the power adapter socket located on the
back panel of the Router.
Connecting the
Router
2 Plug the power adapter into a standard electrical wall socket.
To install your Router, simply connect it to your DSL/Cable modem, and
then connect the Router to a computer in order to be able to access the
Internet. Follow these simple steps:
1 Using RJ-45 cable to connect the WAN port of the Router with the
DSL/Cable modem.
2 Using RJ-45 cable to connect one PC with the LAN port the Router.
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.
22 CHAPTER 2: INSTALLING THE ROUTER
To communicate wirelessly with your Router, your wireless NIC should be
set as follows:
■ Encryption — none
■ SSID — 3Com
■ Channel — 11
This following figure shows a typical network configuration for 3Com
Wireless 11n Cable/DSL Firewall Router.
Figure 5 Network Configuration for the Router
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 6 should be displayed. Select Internet Protocol
TCP/IP and click on Properties.
24 CHAPTER 3: SETTING UP YOUR COMPUTERS
Figure 6 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 7.
Click OK.
Figure 7 Internet Protocol (TCP/IP) Properties Screen
7 Restart your computer.
Windows Vista
Obtaining an IP Address Automatically 25
1 From the Windows Start Menu, select Settings > Network.
2 Click on Organize. Select Properties.
3 Click on Manage network > Connections.
4 Double click Local Area Connection. Select Properties and click continue.
5 A screen similar to (Figure 8) should appear. Select Internet Protocol
Version 6,Version 4 (TCP/IPv6,v4) and click on Properties.
Figure 8 Local Area Connection Properties Screen
6 Ensure that the options Obtain an IPv6,v4 address automatically, and
Obtain DNS servers address automatically are both selected as shown in
(Figure 9). Click OK.
Figure 9 Internet Protocol Version 6 (TCP/IPv6) Properties Screen
26 CHAPTER 3: SETTING UP YOUR COMPUTERS
Windows XP
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.
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.
Disabling PPPoE and PPTP Client Software 27
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 should be
displayed.
4 Select the Never dial a connection option.
Figure 10 Internet Properties Screen
You may want to remove the PPPoE client software from your computer
to free resources, as it is not required for use with the Router.
Disabling Web
Ensure that you do not have a web proxy enabled on your computer.
Proxy
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.
28 CHAPTER 3: SETTING UP YOUR COMPUTERS
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