Atheros IEEE 802.11a/g WLAN Router User Manual
IEEE 802.11a/g WLAN Router
U
SER’S GUIDE
V
ERSION 1.0, JUN. 2003
802.11g Router User’s Guide
1
Copyright Statement
No part of this publication may be reproduced, stored in a retrieval system, or transmitted in
any form or by any means, whether electronic, mechanical, photocopying, recording or
otherwise without the prior writing of the publisher.
Windows 95/98 and Windows 2000 are trademarks of Microsoft Corp.
Pentium is trademark of Intel.
All copyright is reserved.
2
TABLE OF CONTENT
INTRODUCING THE 802.11A/G ROUTER..... ..... .... .... ..... .... .... ..... .... ..... .... ..... .... ..... .... .... .... ..... .... ..... .... ........................................3
O
VERVIEW OF THE
802.11A/G R
OUTER
...........................................................................................................................................3
802.11A/G ROUTER APPLICATIONS..................................................................................................................................................4
A SECURITY OVERV IEW ...................................................................................................................................................................5
802.11A/G ROUTER FEATURES.........................................................................................................................................................5
SETTING UP THE DEVICE ..................................................................................................................................................................6
INSTALLING THE 802.11A/G ROUTER .....................................................................................................................................7
W
HAT’S IN THE BOX
? .......................................................................................................................................................................7
A
PHYSICAL LOOK AT THE BACK PANEL
..........................................................................................................................................8
A
PHYSICAL LOOK AT THE FRONT PANEL
........................................................................................................................................9
CONNECTING THE CABLES .............................................................................................................................................................10
HIGH LEVEL CONFIGURATION STEPS REQUIRED FOR THE 802.11A/G ROUTER .........................................................................10
SETTING UP A WINDOWS PC OR WIRELESS CLIENT AS DHCP CLIENTS ......................................................................................11
CONFIGURING A PC RUNNING MS-WINDOWS 95/98/ME:............................................................................................................11
CONFIGURING A PC RUNNING MS-WINDOWS XP/2000: .............................................................................................................11
CONFIRMING YOUR PC’S IP CONFIGURATION: .............................................................................................................................12
CONNECTING MORE DEVICES THROUGH A HUB TO THE 802.11A/G ROUTER ..........................................................................12
BASIC CONFIGURATION OF THE 802.11A/G ROUTER ....................................................................................................13
LOGGING ON ...................................................................................................................................................................................14
SETUP WIZARD................................................................................................................................................................................14
ADVANCED SETTINGS ................................................................................................................................................................22
O
PERATIONAL MODE
......................................................................................................................................................................22
P
ASSWORD SETTINGS
.....................................................................................................................................................................23
S
YSTEM MANAGEME NT
..................................................................................................................................................................24
SNMP S
ETTINGS
.............................................................................................................................................................................26
DHCP S
ERVER SETTINGS
...............................................................................................................................................................27
MULTIPLE DMZ..............................................................................................................................................................................29
VIRTU AL SERVER SETTINGS ..........................................................................................................................................................30
SPECIAL APPLICATIONS..................................................................................................................................................................31
MAC FILTER ING SETTINGS............................................................................................................................................................32
IP FILTERING SETTINGS .................................................................................................................................................................34
IP ROUTING SETTINGS....................................................................................................................................................................36
WIRELESS SETTINGS.......................................................................................................................................................................37
RADIUS S
ETTINGS
.........................................................................................................................................................................38
D
YNAMIC
DNS S
ETTINGS
..............................................................................................................................................................40
MANAGING YOUR 802.11A/G ROUTER .................................................................................................................................42
HOW TO VIEW THE DEVICE STATUS ..............................................................................................................................................42
HOW TO VIEW THE SYSTEM LOG...................................................................................................................................................43
DHCP CLIENT TABLE ....................................................................................................................................................................43
WIRELESS CLIENT TABLE ..............................................................................................................................................................43
B
RIDGE TABLE
................................................................................................................................................................................44
U
PGRADING FIRMWARE
.................................................................................................................................................................44
H
OW TO SAVE OR RESTORE CONFIGURATION CHANGES
.............................................................................................................45
H
OW TO REBOOT YOUR
802.11A/G R
OUTER
.................................................................................................................................45
W
HAT IF YOU FORGOT THE PASSWORD
?.......................................................................................................................................46
COMMAND LINE INTERFACE..................................................................................................................................................47
GENERAL GUIDELINES ....................................................................................................................................................................47
EXPRESS MODE VS. ADVANCED MODE OF OPERATION ...............................................................................................................48
C
ONVENTIONS
.................................................................................................................................................................................48
C
OMMAND LIST
..............................................................................................................................................................................49
SPECIFICATION ............................................................................................................................................................................50
Introducing the 802.11a/g Router
This manual gives a basic introduction to 802.11a/g Wireless Router. It provides
information to configure the 802.11a/g Router to operate in common applications
such as connecting to the Internet.
We’ll describe how to use your web browser to configure the 802.11a/g Router and to perform various
management functions, e.g. upgrading the software, or viewing the system log, a task that can be useful
in ongoing operations.
This manual consists of the following chapters and appendixes:
Chapter One, Introduction, summarizes features and capabilities of the 802.11a/g Router.
Chapter Two, Installing the 802.11a/g Router, gives steps you should follow to install the 802.11a/g
Router and configure your PCs.
Chapter Three, Configuring the 802.11a/g Router, describes how to log in to the Web Manager, the
browser screen, and steps needed to configure your 802.11a/g Router for specific applications. It gives
easy-to-follow instructions for quick Internet access and provides a guide to basic 802.11a/g Router
configuration.
Chapter Four, Advanced Configuration, provides information on advanced router configuration.
Chapter Five, Managing your 802.11a/g Router, explains other management features of the 802.11a/g
Router.
Overview of the 802.11a/g Router
The 802.11a/g Router is a small desktop router that sits between your local
Ethernet network and a remote network (e.g., the Internet). The 802.11a/g
Router contains an WAN port connecting to an external ADSL/Cable
modem, a DMZ port, a four-port 10/100Mbps Ethernet switch for
connection to PCs on your local wired network, and a wireless interface for
connection to your local wireless network (supporting a data rate of up to
54 Mbps).
Data comes into the 802.11a/g Router from the local wired and wireless
LAN and then is “routed” to the Internet, and vice versa.
Chapter
1
4
802.11a/g Router Applications
ACCESSING THE INTERNET
The most common use of the 802.11a/g Router is to provide shared Internet access to allow everyone
on your LAN to surf the web and send/receive emails or files. The 802.11a/g Router can automatically
acquire a public IP address when connecting to the Internet. In turn, it will automatically assign IP
addresses to PCs (requesting DHCP client devices) on your LAN - you don’t have to apply for and
assign IP addresses to PCs on your network.
ACCESSING SERVERS FROM THE PUBLIC NETWORK
If you want special servers to be accessible to remote users across the Internet (e.g., an e-mail server, an
FTP server, or a web server), you can configure the 802.11a/g Router to proxy the service using its
(public) IP address. It means a remote user can access the server by using the 802.11a/g Router’s IP
address. Upon receiving a request, the 802.11a/g Router will re-direct the request to the actual server
on your local network.
OPERATING AS AN ACCESS POINT
Additionally, the Wireless Router can also be configured as an Access Point, and acts as the central
point of your local wireless network supporting a data rate of up to 54 Mbps. It allows client devices on
your wireless network to access the Internet, to communicate with other wireless devices on your
wireless network, or to communicate with devices on your wired LAN network.
Since 802.11g is based on the same 2.4GHz radio band as the 802.11b technology, the 802.11a/g
Router can inter-operate with existing 11Mbps 802.11b devices. Therefore you can protect your
existing investment in 802.11b client cards, and migrate to the high-speed 802.11g standard as your
needs grow.
802.11g Router User’s Guide
5
A Security Overview
More and more people are concerned about protecting your local network from the Internet. The
802.11a/g Router provides several ways to keep your network secure:
Devices on your wired or wireless network are assigned private IP addresses; therefore remote
users from the Internet cannot see nor access them.
The 802.11a/g Router implements IP packet filtering capabilities, which you can use to selectively
filter (discard) packets to/from the Internet.
You can selectively restrict management to remote devices.
To address the growing security concern in a wireless LAN environment, different levels of security
can also be enabled in the 802.11a/g Router, including:
To disable SSID broadcast so to restrict association to only client stations that are already pre-
configured with correct SSIDs
To enable WEP (Wireless Encryption Protocol) encryption to implement privacy of your data
Support of Access Control List to allow you to grant/deny access to/from specified wireless
stations (using MAC addresses)
Provisioning of centralized authentication through RADIUS Server(s).
802.11a/g Router Features
Compliant with 802.11a, 802.11b and 802.11g standards with roaming capability
Support of NAT for multiple users to share Internet access
IP routing (RIP1/RIP2) support
VPN (Virtual Private Network) support for PPTP/ IPSec pass-through.
Support of PPPoE and PPTP client function for xDSL connections
Support of multimedia applications (ICQ, NetMeeting, CUSeeMe, Quick Time, etc).
Support of the Virtual Server function.
Support of the standard Access Point mode for connection to wireless clients
Built-in DHCP server to assign IP addresses to DHCP client devices on both wired and
wireless LAN
Multiple security measures: to disable SSID broadcast, to define Access Control List, to
enable WEP based encryption (up to 128 bits), plus enhanced Security with 802.1x using a
primary and a backup RADIUS Server
Extensive monitoring capability such as event logging, traffic/error statistics monitoring
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Easy configuration and monitoring through the use of a Web-browser based GUI, a
Command Line Interface (CLI) through a remote telnet session, or SNMP commands from a
remote SNMP management station
Setup Wizard for easy configuration/installation
Setting Up the device
The 802.11a/g Router can be managed by a local PC on either the wired or wireless LAN network. To
do this, the 802.11a/g Router must have an IP address, which can be statically configured, or is
dynamically obtained from a DHCP server on the LAN. For reasons to be given in Chapter 3, static IP
address assignment is much preferred.
802.11g Router User’s Guide
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Installing the 802.11a/g Router
This section describes the installation procedure for your 802.11a/g Router. It starts
with a summary of the content of the package you have purchased, followed by steps of how to
connect and power up your 802.11a/g Router. Finally, it describes how to configure a Windows PC to
communicate with your 802.11a/g Router.
What’s in the Box?
The 802.11a/g Router package comes with the following items:
One 802.11a/g Router
One 12V AC power adapter with a barrel connector
One Category-5 LAN cable with RJ-45 connectors
One copy of the 802.11a/g Router User’ Guide
Chapter
2
8
A physical look at the back panel
The following illustration shows the rear panel of Wireless Router.
(1) 4 RJ-45 10/100 Switch connectors for connecting to PCs and workstations or connecting
external Ethernet hub, or switch with auto-sensing.
(2) 1 RJ-45 WAN connector for connecting to Internet via ADSL/Cable modem
(3) 1 RJ-45 DMZ connector for connecting to an internal DMZ network or a PC
(4) 1 AC power connector for connecting through an AC power adapter (included as part of the
product) to the wall power outlet
(5) 1 Restore button to restore the device back to the factory settings
802.11g Router User’s Guide
9
A physical look at the front panel
The LEDs on the front of the 802.11a/g Router reflect the operational status of the unit.
802.11a/g Router LED Description
Label LAN WAN/DMZ WLAN POWER
Steady Green Link is active Link is active Link is active Power
OFF
No LAN
connection
No connection
No Wireless
connection
No Power
FLASH XMT/RCV Data XMT/RCV Data XMT/RCV Data N/A
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Connecting the Cables
Follow these steps to install your 802.11a/g Router:
Step 1 Connect ADSL/Cable modem to the Wireless Router WAN port using CAT5 UTP
LAN cable.
Step 2 Connect a PC/Workstation to one of the LAN ports of the Wireless Router, such as
port 1 or port 2.
Step 3 Connect the AC adapter to the Wireless Router and an electrical outlet.
High Level Configuration Steps Required for the 802.11a/g Router
This section describes configuration required for the 802.11a/g Router before it can work properly in
your network.
Normally, devices on both LANs (except for the Web servers) are configured to obtain their IP
addresses automatically. Depending on whether there is a separate DHCP server available in your LAN
environment network, thus to determine if you need to enable the built-in DHCP server in the
Wireless Router. The following configuration step assumes that the router’s built-in DHCPS will be
used.
Additionally, since you need to perform various configuration changes to the 802.11a/g Router,
including the SSID, Channel number, the WEP key, …, etc., it is necessary to associate a fixed IP
address with the 802.11a/g Router, which is why the 802.11a/g Router will be shipped with a factory
default private IP address of 192.168.1.1 (and a network mask of 255.255.255.0).
802.11g Router User’s Guide
11
Setting up a Windows PC or wireless client as DHCP clients
The following will give detailed steps of how to configure a PC or a wireless client to “obtain IP
addresses automatically”. For other types of configuration, please refer to the corresponding user
manual.
For the case of using a LAN attached PC, the PC must have an Ethernet interface installed properly,
be connected to the 802.11a/g Router either directly or through an external LAN switch, and have
TCP/IP installed and configured to obtain an IP address automatically from a DHCP server in the
network.
For the case of using a wireless client, the client must also have a wireless interface installed properly,
be physically within the radio range of the 802.11a/g Router, and have TCP/IP installed and
configured to obtain an IP address automatically from a DHCP server in the network.
Configuring a PC running MS-Windows 95/98/Me:
1. Click the Start Button, and select Settings.
2. Click the Control Panel. The Win95/98/Me Control Panel will appear.
3. Open the Network setup window by double-clicking the Network icon.
4. Check your list of Network items. If TCP/IP is already installed, proceed to step 5. Otherwise:
(You may need your Windows CD to complete the installation of TCP/IP.)
Click the ADD button.
In the Network Component Type dialog box, select Protocol.
In the Select Network Protocol dialog box, select Microsoft.
In the Network Protocols area of the same dialog box, select TCP/IP and click OK.
5. With TCP/IP installed, select TCP/IP from the list of Network Components.
6. In the TCP/IP window, check each of the tabs and verify the following settings:
Bindings: Select Client for Microsoft Networks and Files and printer sharing for Microsoft
Networks
Gateway: All fields are blank.
DNS Configuration: Select Disable DNS.
WINS Configuration: Select Use DHCP for WINS Resolution.
IP address: Select the Obtain IP address automatically radio button.
7. Reboot the PC.
Configuring a PC running MS-Windows XP/2000:
1. Click the Start button, and choose Control Panel (in Classic View).
2. In the Control Panel, double-click Network Connections.
3. Double-click Local Area Connection.
4. In the LAN Area Connection Status window, select Internet Protocol (TCP/IP) and click
Properties.
5. Select the Obtain an IP address automatically and the Obtain DNS server address automatically
radio buttons.
12
6. Click OK to finish the configuration.
Confirming your PC’s IP Configuration:
There are two tools useful for finding out a computer's IP address and default gateway:
WINIPCFG (for Windows 95/98/Me) Select the Start button, and choose Run. Type winipcfg, and a
window will appear listing the IP configuration. You can also type winipcfg in the MS-DOS prompt.
The procedure required to set a static IP address is not too much different from the procedure
required to set to “obtain IP addresses dynamically” - except that at the end of step 7, instead of
selecting “obtain IP addresses dynamically, you should specify the IP address explicitly.
Connecting More Devices Through A Hub To The 802.11a/g Router
The Wireless Router provides four LAN ports to allow up to four PCs or Workstations to be
connected to it directly. If you want to connect more devices, you can connect an external hub or
switch to any of the LAN ports using a LAN cable.
802.11g Router User’s Guide
13
Basic Configuration of the 802.11a/g Router
This section contains basic configuration procedure for the 802.11a/g Router. It
describes how to set up the 802.11a/g Router for Internet Access operation, and
how to set up the LAN configuration.
Although the Command Line Interface (CLI) may also be used to configure the 802.11a/g Router, the
browser-based configuration mechanism is generally preferred for its ease of use. The Internet
Explorer 6.0 and up are supported.
The 802.11a/g Router is designed so that all basic configuration may be invoked through the a
standard Web browser such as Internet Explorer.
To access the WLAN 11g Router’s management interface for the first time, enter the default IP
address of the WLAN 11g Router in your Web browser http://192.168.1.1/
.
Note: The IP address of your PC must be in the same IP subnet as the 802.11a/g Router. It is preferred that you
configure the PC to obtain an IP address automatically from the 802.11a/g Router.
Chapter
3
14
The Home Page of the 802.11a/g Router screen will appear, with its main menu displayed on the
screen, showing the following top-level choices: Setup Wizard, Device Status, System Tools,
Advanced Settings, and Help. Selecting any will allow you to navigate to other configuration menus.
Logging On
When you attempt to access a configuration screen from the browser menu, an administrator login
screen will appear, prompting you to enter your password to log on. Once you are logged in, you will
not be asked to log in again unless your “session” expires such as due to inactivity timeout.
If you are logging in for the first time after you received your 802.11a/g Router, you should use the
factory default password, “password” to log in. (You should change it as soon as after you log in.)
Characters you type (as your password) will be echoed back as a string of asterisks (“*”) for security
reasons. After you enter the password, clicking the LOG ON button will begin the password
verification process and, if successful, your configuration session can begin.
Note: Should there be no settings or access on the web management screen, system will logout
automatically in 10 minutes.
Setup Wizard
The Setup Wizard will guide you through a series of configuration screens to set up the basic
configuration of your 802.11a/g Router. At the end of the Setup Wizard screens, you should press the
“finish” button, and all your configuration modifications will take effect.
SETTING UP YOUR LOCAL TIME ZONE AND DATE/TIME
After logging in, the Time Settings page appears. The router time will first be set to the local time of
the PC (on which the browser is running). If this time is not correct, modify the appropriate fields as
necessary, and then click “NEXT”.
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