Linksys EtherFast Instant Broadband BEFW11S4 User manual

Instant Broadband™ Series
EtherFast®Wireless Access
Point + Cable/DSL Router with
4-Port Switch
Use this Guide to install: BEFW11S4
User Guide

COPYRIGHT & TRADEMARKS
Copyright © 2001 Linksys, All Rights Reserved. Instant Broadband is a registered
trademark of Linksys. Microsoft, Windows, and the Windows logo are registered trade-
marks of Microsoft Corporation. All other trademarks and brand names are the proper-
ty of their respective proprietors.
LIMITED WARRANTY
Linksys guarantees that every Instant Broadband EtherFast®Wireless Access Point +
Cable/DSL Router with 4-Port Switch is free from physical defects in material and work-
manship under normal use for one (1) year from the date of purchase. If the product
proves defective during this warranty period, call Linksys Customer Support in order to
obtain a Return Authorization number. BE SURE TO HAVE YOUR PROOF OF PUR-
CHASE ON HAND WHEN CALLING. When returning a product, mark the Return
Authorization number clearly on the outside of the package and include your original
proof of purchase. RETURN REQUESTS CANNOT BE PROCESSED WITHOUT PROOF
OF PURCHASE. All customers located outside of the United States of America and
Canada shall be held responsible for shipping and handling charges.
IN NO EVENT SHALL LINKSYS’ LIABILITY EXCEED THE PRICE PAID FOR THE PROD-
UCT FROM DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAM-
AGES RESULTING FROM THE USE OF THE PRODUCT, ITS ACCOMPANYING SOFT-
WARE, OR ITS DOCUMENTATION. LINKSYS OFFERS NO REFUNDS FOR ITS PROD-
UCTS. Linksys makes no warranty or representation, expressed, implied, or statutory,
with respect to its products or the contents or use of this documentation and all accom-
panying software, and specifically disclaims its quality, performance, merchantability,
or fitness for any particular purpose. Linksys reserves the right to revise or update its
products, software, or documentation without obligation to notify any individual or entity.
Please direct all inquiries to:
Linksys P.O. Box 18558, Irvine, CA 92623.
FCC STATEMENT
The Instant Broadband EtherFast®Wireless Access Point + Cable/DSL Router with 4-
Port Switch has been tested and found to comply with the limits for a Class B digital
device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide rea-
sonable protection against harmful interference in a residential installation. This equip-
ment generates, uses, and can radiate radio frequency energy and, if not installed and
used according to the instructions, may cause harmful interference to radio communi-
cations. However, there is no guarantee that interference will not occur in a particular
installation. If this equipment does cause harmful interference to radio or television
reception, which is found by turning the equipment off and on, the user is encouraged
to try to correct the interference by one or more of the following measures:
• Reorient or relocate the receiving antenna
• Increase the separation between the equipment or device
• Connect the equipment to an outlet other than the receiver’s
• Consult a dealer or an experienced radio/TV technician for assistance
UG-BEFW11S4-10125NC DG

Instant BroadbandTM Series
Table of Contents
Introduction 1
Linksys Wireless AP + Cable/DSL Router 1
Features 2
Package Contents 3
System Requirements 3
Getting to Know the Wireless Access Point +
Cable/DSL Router 3
The Wireless Access Point + Cable/DSL Router’s Rear Panel 3
The Reset Button 4
The Wireless Access Point + Cable/DSL
Router’s Front Panel LEDs 5
Connecting the Wireless Access Point +
Cable/DSL Router to Your Network 7
Overview 7
About Static & Dynamic IP Addresses 7
Connecting Your Hardware Together & Booting Up 8
Configuring Your PCs to Connect to the
Wireless Access Point + Cable/DSL Router 10
Configuring Your Network with the
Wireless Access Point + Cable/DSL Router 12
Configuring the Wireless AP + Cable/DSL Router 12
The Wireless Access Point +
Cable/DSL Router’s Web-based Utility 17
Quick and Easy Administration 17
Setup 18
Setting WEP Encryption 21
Password 24
Status 25
DHCP 26
Log 28
Help 29
Filters 31
Forwarding 33
Dynamic Routing 34
Static Routing 35
DMZ Host 37
MAC Address Cloning 38
Troubleshooting 39
Common Problems and Solutions 39
Frequently Asked Questions 41
Appendix 45
How to Ping Your ISP’s E-mail & Web Addresses 45
Installing the TCP/IP Protocol 48
Twisted-Pair Cabling 50
Crimping Your Own Network Cables 51
Glossary 52
Specifications 58
Environmental 52
Warranty Information 60
Contact Information 61
EtherFast® Wireless Access Point + Cable/DSL Router with 4-Port Switch

EtherFast® Wireless Access Point + Cable/DSL Router with 4-Port Switch
Introduction
The Linksys Wireless AP + Cable/DSL Router
Congratulations on your purchase of an EtherFast®Wireless AP + Cable/DSL
Router with 4-Port Switch. The EtherFast®Wireless AP + Cable/DSL Router
provides the ideal solution for connecting your wireless network to a high-
speed broadband Internet connection and a 10/100 Fast Ethernet backbone.
Configurable as a DHCP server for your existing network, the EtherFast®
Wireless AP + Cable/DSL Router acts as the only externally recognized
Internet gateway on your local area network (LAN) and serve as an Internet
NAT firewall against unwanted outside intruders. The Router can also be
configured to filter internal users’ access to the Internet.
A typical router relies on a hub or a switch to share its Internet connection,
but the Linksys EtherFast®Wireless AP + Cable/DSL Router channels this
connection through the blazing, full duplex speed of its built-in EtherFast®
10/100 4-Port Switch. This cutting-edge combination of wireless router and
switch technology eliminates the need to buy an additional hub or switch and
extends the range of your wireless network. Now your entire wireless net-
work can enjoy blazing broadband Internet connections supported by its
robust switched backbone. With the dual-function speed and power of the
EtherFast®Wireless AP + Cable/DSL Router, your network will take off at
speeds faster than you ever imagined possible.
• Share Internet Access With Others on the Network
• Interoperable with IEEE 802.11b (DSSS) 2.4GHz-Compliant Equipment
• Provides Roaming, Best Access Point Selection, Load Balancing, and
Network Traffic Filtering
• Long Operating Range Supports up to 91m (Indoors) and up to 457m
(Outdoors)
• Capable of up to 64-Bit WEP Encryption
• MAC Address and Internal Internet Access Filtering
• Connects to a Broadband Modem, a 10/100 Ethernet Backbone and a
Wireless Network
• Configurable Through Your Networked PC's Web Browser
• Supports IPSec Pass-Thru and PPTP
• Able to Act as a DHCP Server for Your Existing Network
• Free Technical Support—24 Hours a Day, 7 Days a Week for North
America Only
• 1-Year Limited Warranty 2
Features
Instant BroadbandTM Series
Package Contents
• One Linksys EtherFast®Wireless Access Point + Cable/DSL Router with 4-
Port Switch
• One power adapter
• One Tech Helper CD-ROM
• Two Antennas
• One user guide and registration card
System Requirements
• One Broadband Internet connection using an External Cable or DSL
Modem (if sharing an Internet connection)
• One PC with an installed 10Mbps, 100Mbps, or 10/100 Mbps Ethernet card
(for initial setup)
• TCP/IP network protocol for each PC
• UTP network cable with RJ-45 connector
• Internet Explorer 4.0 (Minimum) or higher (5.0 Recommended), or
Netscape Navigator 4.0 (Minimum) or higher (4.7 Recommended)
1

Uplink The Uplink Port is where you can expand your net-
work by connecting to another switch or hub. The
Uplink Port is shared with Port 4. Uplinking to
another switch or a hub is done by simply running
a cable from the Uplink Port to the other device. If
the Uplink port is being used, Port 4 will not work.
Power The Power Port is where you will connect the
included AC Power adapter.
Antenna Jacks The Antenna Jacks are where you will connect the
included antennas.
The Reset Button*
Briefly pressing the Reset Button will refresh the Router’s connec-
tions, potentially clearing any jammed links.
Pressing the Reset Button and holding it in for a few seconds will
clear all of the Router’s data and restore the factory defaults. This should be
done only if you are experiencing heavy routing problems, and only after you
have exhausted all of the other troubleshooting options. By resetting the Router,
you run the risk of creating conflicts between your PCs’ actual IP Addresses and
what the Router thinks their IP Addresses should be.You may be forced to
reboot the entire system(s).
If your router locks up, simply power it down for 3 to 5 seconds by removing the
power cable from the Router’s Power Port. Leaving the power off for too long
could result in the loss of network connections.
Getting to Know the Wireless
Access Point + Cable/DSL Router
The Wireless AP + Cable/DSL Router’s Rear Panel
The rear panel of the Router is where all of the Router’s connections are
made.
WAN The WAN (Wide Area Network) Port is where you
will connect your cable or DSL modem.
Ports 1-4 These four LAN (Local Area Network) ports are
where you will connect networked devices, such as
PCs, print servers, and any other Ethernet devices
you want to put on your network. If Port 4 is being
used, the Uplink Port will not work.
EtherFast® Wireless Access Point + Cable/DSL Router with 4-Port Switch
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Instant BroadbandTM Series

EtherFast® Wireless Access Point + Cable/DSL Router with 4-Port Switch
6
The WAN Indicators
Link Green. The Link LED illuminates when a successful con-
nection is made between the Router and your Broadband
device or network.
Act Green. The Act LED flickers when the Router is sending or
receiving data over the broadband port.
Diag Red. The Diag LED illuminates when the Router goes
through its self-diagnosis mode during boot-up and restart.
It will turn off upon successful completion of the diagnosis.
If this LED stays on for an abnormally long period of time,
refer to the Troubleshooting section.
The Wireless AP + Cable/DSL Router’s Front Panel LEDs
The LAN Indicators
WLANAct Green. The Link LED illuminates when there is wireless
activity.
WLAN Link Green. The Link LED illuminates when the wireless option
is enabled. When the wireless option is disabled (through
the Web-based utility), the LED is off.
Power Green. The Power LED illuminates when the Router is pow-
ered on.
Link/Act Green. The Link/Act LED serves two purposes. If the LED
is continuously illuminated, the Router is successfully con-
nected to a device through the corresponding port (1, 2, 3
or 4). If the LED is flickering, the Router is actively send-
ing or receiving data over that port.
Full/Col Green. The Full/Col LED also serves two purposes. If this
LED is continuously illuminated, the connection made
through the corresponding port is successfully running in
Full Duplex mode. If the LED is flickering, the connection
is experiencing collisions. Infrequent collisions are normal.
If this LED is flickering too often, there may be a problem
with your connection. Check the Troubleshooting section if
you think there is a problem.
100 Orange. The 100 LED illuminates when a successful
100Mbps connection is made through the corresponding
port.
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Instant BroadbandTM Series

EtherFast® Wireless Access Point + Cable/DSL Router with 4-Port Switch
8
A dynamic IP address may change every time your computer connects to the
network.
DHCP (Dynamic Host Configuration Protocol) DHCP is software that automati-
cally assigns IP addresses to client stations logging onto a TCP/IP network.
DHCP eliminates having to manually assign permanent IP addresses to every
device on your network. DHCP software typically runs in servers and is also
found in network devices such as Routers.
Connecting Your Hardware Together and Booting Up
Once you are sure that you have the above values on hand, you can begin the
Installation and Setup of your Wireless Access Point + Cable/DSL Router.
1. Power everything down, including your PCs, your Cable or DSL modem
and the Router.
2. Connect a Network cable from one of your PCs’ Ethernet ports to one of
the LAN Ports on the back of the Router. Do the same with all the PCs you
wish to connect to the Router. (LAN Port 4 will become inactive if you use
the Uplink port.)
3. Connect the network cable from your Cable or DSL modem to the WAN
port on the rear of the Router.
4. Connect the power-supply cable to the Power port on the rear of the
Router, then plug the supplied AC power cable into a power outlet.
• The Power LED will illuminate green as soon as the power adapter is
connected.
• The Diag LED will illuminate red for a few seconds while the Router
goes through its internal diagnostic test. The LED will turn off when the
self-test is complete.
5. Power on the Cable or DSL modem. Verify that the power is on by
checking the Link LED in the WAN column on the front of the Router.
The Link LED will be illuminated if the power is on and the modem is
ready.
Connecting the Wireless Access
Point + Cable/DSL Router to Your
Network
Overview
Unlike a simple hub or switch, the setup of the Wireless Access Point +
Cable/DSL Router consists of more than simply plugging everything together.
Because the Router acts as a DHCP server, you will have to set some values
within the Router, and also configure your networked PCs to accept the IP
Addresses the Router chooses to assign them.
You will need the following values from your ISP in order to install the
Wireless Access Point + Cable/DSL Router:
• Your broadband-configured PC’s fixed Internet IP Address (if applicable)
• Your broadband-configured PC’s Computer Name and Workgroup Name
• Your Subnet Mask
•Your Default Gateway
•Your Primary DNS IP address
Whoever installed your broadband access should have left this information
with you. If not, call your ISP and they will be able to supply you with it.
About Static & Dynamic IP Addresses
Static IP Addresses A static IP address is an IP address permanently assigned
to computer in a TCP/IP network. Static IP addresses are usually assigned to
networked devices, which are consistently accessed by multiple users, such as
Server PCs, or print server. If you are using your Router to share your cable
or DSL Internet connection, contact your ISP to see if they have assigned
your home a static IP address.You will need that address during your Router’s
configuration.
Dynamic IP Addresses A dynamic IP address is an IP address that is automati-
cally assigned to a client station (computer, printer, etc.) in a TCP/IP network.
Dynamic IP addresses are typically assigned by a DHCP server, which can be
a computer on the network or another piece of hardware, such as the Router.
}Only if applicable
7
Instant BroadbandTM Series

Now that your Router is physically installed, you will have to configure your
PCs to accept the IP addresses that your Router will provide.
1. Click the Start button, select Settings, then Control Panel.
2. Double-click the Network icon.
3. In the Configuration window, select the TCP/IP protocol line that has
been associated with your network card/adapter.
These instructions apply only to Windows 95, 98 and
Millennium machines. For TCP/IP setup under Windows NT or
Windows 2000, please refer to your Microsoft Windows NT or
Windows 2000 manual.
EtherFast® Wireless Access Point + Cable/DSL Router with 4-Port Switch
10
Configuring Your PCs to Connect to the Wireless Access
Point + Cable/DSL Router
NNoottee::
If the
TCP/IP protocol
is not config-
ured on your
PC, go to the
Appendix for
TCP/IP installa-
tion instructions
now.
6. Press the Reset button on the back of the router. Hold the button in for
three seconds, or until the Diag LED illuminates red. This restores the
router’s default settings.
7. Power on your PC.
The Hardware Installation is complete. Continue to the next page to con-
figure your PCs and Router.
9
NNoottee::Some ISPs—most notably some cable providers—configure
their networks so that you do not have to enter a full Internet
address into your web browser or e-mail application to reach your
home page or receive your e-mail. If your Internet home page
address is something very simple, such as “www”, rather than
“www.linksys.com”, or your e-mail server’s address is something similar to “e-
mail” or “pop3”, rather than “pop.mail.linksys.com”, you won’t be able to prop-
erly configure your Router until you determine the actual Internet addresses of
your Web and e-mail connections.
You mmuussttobtain this information prior to connecting the Router to your network.
You can obtain this information by contacting your ISP, or you can turn to the
section of the Appendix on HHoowwttooPPiinnggYYoouurrIISSPP’’ssEE--mmaaiill&&WWeebbAAddddrreesssseess..
Instant BroadbandTM Series

EtherFast® Wireless Access Point + Cable/DSL Router with 4-Port Switch
12
Configuring Your Network
with the Wireless Access Point +
Cable/DSL Router
Configuring the Wireless AP + Cable/DSL Router
Now that your Wireless Access Point + Cable/DSL Router is wired into your
network, you can begin configuring your system.
1. Open your web browser and type http://192.168.1.1 in the
browser’s Address box. This number is the default IP address of your
router. Press Enter.
NNoottee::If you have previously enabled an Internet Sharing
Proxy Service on any of your PCs, you must disable it now.
• If you are running Netscape Navigator: Click EEddiitt>> PPrreeffeerreennccee>>
AAddvvaanncceedd>> PPrrooxxiieess> and click DDiirreeccttCCoonnnneeccttiioonnttootthheeIInntteerrnneett.
• If you are running Internet Explorer v5 or better, click SSttaarrtt>>
SSeettttiinnggss>> CCoonnttrroollPPaanneell>> IInntteerrnneettOOppttiioonnss>> CCoonnnneeccttiioonnss>>
LLAANNSSeettttiinnggss. Remove the checks from all three boxes. Click OOKKto
continue.
4. Click the Properties button, then choose the IP Address tab. Select
Obtain an IP address automatically. Click on the Gateway tab and make
sure that all fields there are empty.
5. Click OK. The Network Properties window will reappear. Click OK. All
client settings are complete. Windows may ask for original Windows
installation files, which can be found on your Windows CD-ROM (i.e.:
D:\win98, D:\win95, D:\ win9x - where “D” is the letter of your CD-ROM
drive) or possibly on your hard drive (c:\windows\options\cabs.)
6. Windows will ask you to restart the PC. Click Yes.
Repeat steps 1-6 for each PC on your network. When all of your PCs are
configured, continue on to set up the router using the router’s Web-
based Utility.
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EtherFast® Wireless Access Point + Cable/DSL Router with 4-Port Switch
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4. Configure the following values.
Host Name & Domain Name These fields allow you to supply a host and
domain name for the Router. Some ISPs require these names as identifi-
cation. You may have to check with your ISP to see if your Broadband
Internet service has been configured with a host and domain name. In
most cases, leaving these fields blank will work.
LAN IPAddress These values refer to your internal network settings.
Unless you have specific internal needs, there should be no reason to
change these values. For the internal LAN, the default values are as fol-
lows.
• Private IP Address: 192.168.1.1
• Subnet Mask: 255.255.255.0
Wireless In this section, you can decide whether or not to use WEP
Encryption and configure the level of WEP Encryption. WEP
Encryption is not necessary for the operation of your Router. For more
information, see the section of this guide called Setting WEP
Encryption.
WAN IP Address These values refer to the outside network you connect to
every time you access your Broadband Internet connection. Most
Broadband ISPs assign their clients with a different IP address each time
they log on. If this is the case with your ISP, click Obtain an IP
Address Automatically and continue to step 5. If your ISP assigns you a
fixed IP address, click Specify an IP Address and enter the address into
the Subnet Mask, Default GatewayAddress and DNS fields provided
by the ISP.
NNoottee::All of this information should be readily available from your ISP.
2. A username and password prompt will appear. Leave the User Name
box empty and type admin (the default password) in the Password box.
Click OK.
3. The WirelessAP + Cable/DSL Router’s Setup page will appear.
13
NNoottee::
Due to dif-
ferences in web
browsers, some
of the screens
shown may differ
from those seen
on your router.
Instant BroadbandTM Series

EtherFast® Wireless Access Point + Cable/DSL Router with 4-Port Switch
16
6. Choose the DHCP tab.
7. Unless you already have a DHCP server on your internal network,
choose Enable from the DHCP Server field. By choosing Enable, you will
configure the Router to automatically assign IP addresses to each of your
PCs. In the Number of DHCP Users box, enter the number of PCs you plan
on networking to the Router. Don’t forget to change this number if, in the
future, you add more PCs to your network. In most cases, these values will
not have to be changed unless you have more than 50 computers on the
network.
8. Click Apply, then click Continue.
9. Reset the power on the cable or DSL modem,
then restart the computer so the computer can
obtain the new Router information.
Your Wireless Access Point + Cable/DSL Router is now configured to
your network. If you would like, you may continue on to learn more
about the Router’s Web-based Utility.
NNoottee::
Make sure that a
Network Card or
adapter has been suc-
cessfully installed into
each PC you plan on
configuring prior to
continuing.
NNoottee::
You cannot have two DHCP servers running on one LAN at the same time. If
you have an existing DHCP server on your LAN, you must decide which device will
act as server. If you choose this Router, you must disable the DHCP capabilities of the
other device, and vice versa. The device which is not the DHCP server must have a
static IP address, which must be compatible with your existing network in order to be
recognized.
PPPoE (Point-to-Point Protocol over Ethernet) Some DSL-based ISPs
use PPPoE to establish communications with an end-user. If you are
using a DSL line, check with your ISP to see if they use PPPoE. If they
do use PPPoE, you must enable it. If you do enable PPPoE, remember to
remove any existing PPPoE applications already on any of your PCs. To
enable PPPoE:
1. Click on the Enable option in the PPPoE section of the Setup screen.
2. Enter the User Name you use to log on to your Internet connection.
3. Enter your corresponding Password.
Connect on Demand (Only available if PPPoE is enabled) If you aren’t
actively using the Internet, you can configure your Router to cut your con-
nection with your ISP after a certain period of time. If you have been dis-
connected due to inactivity, Connect on Demand enables your Router to
automatically re-establish your connection as soon as you attempt to
access the Internet again. If you wish to activate Connect on Demand,
choose the Enable option.
Max Idle Time (Only available if PPPoE is enabled) Max Idle Time is the
number of minutes that passes before the Router drops your Internet con-
nection, due to inactivity. For best connection reliability, the recommended
settings are 0 or 9999. Otherwise, enter in the number of minutes you
want to elapse before your Internet access disconnects.
KeepAlive Option (Only available if PPPoE is enabled) This option keeps
your PPPoE-enabled Internet access connected indefinitely, even when it
sits idle. It keeps the connection alive by sending out a few data packets
periodically, so your Internet service thinks that the connection is still
active. To use this option, click on the box next to Keep Alive to select it.
5. When you have properly configured the Setup page, click Apply, then
click Continue.
15
Instant BroadbandTM Series
NNoottee::
RAS Settings are for Singapore customers only. If you are a Singapore
customer, contact your ISP for RAS Settings before trying to complete this
screen.

EtherFast® Wireless Access Point + Cable/DSL Router with 4-Port Switch
18
Setup
The Basic Setup screen is the first screen you will see when you access the
Utility. If you have already installed and setup your router, you have already
seen this screen and have already properly configured all of the screen’s val-
ues.
• Host Name This entry is necessary for some ISPs. Ask your ISP.
• Domain Name This entry is necessary for some ISPs. Ask your ISP.
• Firmware Version This entry shows the version of the firmware you are
using. Future versions of the Router’s Firmware may become available on
the Linksys Website.
• LAN IP Address and Subnet Mask The IP Address and Subnet Mask of
the router as it is seen on the internal LAN.The default value is 192.168.1.1
for IP and 255.255.255.0 for Subnet Mask. Unless you already know your
settings, we recommend that you keep the defaults.
•Wireless (Enable/Disable). In order to utilize the wireless functions of the
Router, select Enable. If you do not wish do utilize any wireless functions,
make sure Disable is selected. (Note: No other wireless functions will be
available unless you enable this setting.)
NNoottee::
The Setup
page shown in
this graphic may
differ from the
one seen on your
router.
The Wireless Access Point +
Cable/DSL Router’s Web-based
Utility
Quick & Easy Administration
For your convenience, an administrative utility has been programmed into the
chipset of your router. All router-based administrative tasks are performed
through this web utility. The web utility can be accessed by any PC on the
network by typing http://192.168.1.1 into the PC’s web browser
address window.
Upon entering the address into the web browser, a password request page will
pop up.
Leave the User Name field empty, but type “admin” into the Password field.
On the following pages you will find brief descriptions of each utility web-
page and each page’s more important functions. More detailed explanations
and instructions can be found by clicking each page’s Help button. To clear
any values you’ve entered on any page, click Cancel and re-enter informa-
tion. To apply any settings you’ve altered on any page, click the Apply but-
ton. Once all settings are correct, click Continue.
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EtherFast® Wireless Access Point + Cable/DSL Router with 4-Port Switch
20
• Connect on Demand (Only available if PPPoE is enabled) If you aren’t
actively using the Internet, you can configure your Router to cut your
connection with your ISP after a certain period of time. If you have been
disconnected due to inactivity, Connect on Demand enables your Router
to automatically re-establish your connection as soon as you attempt to
access the Internet again. If you wish to activate Connect on Demand,
choose the Enable option.
• Max Idle Time (Only available if PPPoE is enabled) The Max Idle Time
is the amount of time you would like to pass before the Router drops your
Internet connection due to inactivity. For best connection reliability, the
recommended settings are 0 or 9999.
• KeepAlive Option (Only available if PPPoE is enabled) This option
keeps your PPPoE-enabled Internet access connected indefinitely, even
when it sits idle. It keeps the connection alive by sending out a few data
packets periodically, so your Internet service thinks that the connection is
still active. To use this option, click on the box next to Keep Alive to
select it.
Password
In order to have the changes that you have
made take affect, click the AAppppllyybutton..
• ESSID The ESSID is the unique name shared among all points in a wire-
less network. The ESSID must be identical for all points in the network. It
is case sensitive and must not exceed 32 characters. Make sure that all
points in the network are the same. Verify that you’re using the correct
ESSID and click the Enable button to set it.
•Channel Select the appropriate channel from the list provided to corre-
spond with your network settings, between 1 and 11. All points in your
wireless network must use the same channel in order to function correctly.
Verify that the correct channel is selected and click the Enable button to set
it.
•WEP (Mandatory/Disable). In order to utilize WEP encryption, select
Enable. If you do not wish do utilize WEP encryption, make sure Disable
is selected.
•WEP Key Setting When WEP Encryption is Enabled, press this button to
modify the WEP Key Settings. See the Section on Setting WEP
Encryption for more information.
•WAN IP Address and Subnet Mask The IP Address and Subnet Mask
of the router as seen by external users on the Internet (including your
ISP). If set to Obtain an IP address automatically, these values are
assigned by your ISP.
• Default Gateway Address Your ISP will provide you with the Gateway IP
Address. If set to Obtain an IP address automatically, these values are
automatically assigned by your ISP.
• DNS (Domain Name Server) IP Address Your ISP will provide you
with at least one DNS IP Address. If set to Obtain an IP address automati-
cally, these values are automatically assigned by your ISP.
You can test and see if the above settings are correct by successfully connect-
ing to the Internet.
• PPPoE (Point-to-Point Protocol over Ethernet) Some DSL-based ISPs
use PPPoE to establish communications with an end-user. If you are using
a DSL line, check with your ISP to see if they use PPPoE. If they do use
PPPoE, you must enable it. If you do enable PPPoE, remember to remove
any existing PPPoE applications already on any of your PCs. To enable
PPPoE:
1. Click on the Enable option in the PPPoE section of the Setup screen.
2. Enter the User Name you use to log on to your Internet connection.
3. Enter your corresponding Password.
19
Instant BroadbandTM Series
NNoottee::
RAS Settings are for Singapore customers only. If you are a Singapore
customer, contact your ISP for RAS Settings before trying to complete this
screen.

22
EtherFast® Wireless Access Point + Cable/DSL Router with 4-Port Switch
3. The following screen will appear, where you will choose your WEP
Encryption settings. If you select 64 Bit, choose your WEP Encryption
settings in the screen below.
4. If you select 128 Bit as shown in the screen above, the following screen
will appear, allowing you to create a new WEP key.
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Instant BroadbandTM Series
WEP (Wired Equivalent Privacy) Encryption is a method of encrypting data
that is transmitted over your wireless network to insure data security. In a
wired network, data security is maintained through the physical wire. WEP
Encryption provides the same level of security for your wireless data as if it
were being transmitted over standard network cabling (which is how the name
is derived). In order to duplicate wired network security levels, wireless data
is encrypted at its point of transmission. It is decoded by the receiving
device. This allows users to have the same amount of security over their
wireless network as they would over a wired network. This level of security
is above that already provided by the use of password protection by your net-
work operating system.
The present standard for this encryption, set by the IEEE (the Institute of
Electrical and Electronics Engineers), is defined as 64-bit (sometimes also
called 40-bit) encryption. The Router allows you to choose between 64-bit
and 128-bit. These numbers refer to the complexity of the algorithms gener-
ated in order to code and decode the data transmitted. The higher the bit
number, the greater the complexity of the algorithm, which is designed to
provide a more secure the encryption. Be aware, however, that higher levels
of encryption often negatively affect network data transmission rates. This
encryption is not necessary for the operation of your wireless network
device. Your need for security can only be determined by you. If your secu-
rity needs are such that ordinary password protection is sufficient, you may
decide not to use the additional WEP Encryption. However, should your
security needs dictate it, the Wireless Access Point + Cable/DSL Router can
provide as secure a connection as is available in wireless networking.
1. At the Setup Screen, if you choose to enable
WEP Encryption, select Mandatory under the
WEP section.
2. Press the WEP Key Setting button to set the
WEP Encryption type and level.
Setting WEP Encryption
Note: WEP Encryption is an additional data security measure and
not essential for Router operation.
NNoottee::
In order for WEP
Encryption to be enabled,
wireless functions must first
be enabled. Select EEnnaabbllee
under the Wireless section
before prcceeding.

24
EtherFast® Wireless Access Point + Cable/DSL Router with 4-Port Switch
It is strongly recommended that you set a password for the router. When you
first power up the router, you will notice that the Password setting default is
“admin”. For security, we recommend that you change your password often.
To change your password, enter your new password in the Router Password
box. Enter it again in the box just below the Router Password box, exactly as
you typed it in the first box. When you are sure you have entered the pass-
word as you want it, press the Apply button.
Password
If you set the Restore Factory Default option and click Apply,
you will clear all of the router’s settings. Do not restore to the
factory defaults unless you want to completely set up the
Router again. Once the Router is reset, you will have to re-
enter your configuration.
WEP Encryption key can be generated in one of two ways:
1. You can create an encryption key by using a Passphrase. To generate
the encryption key using a passphrase, enter a text string in the Passphrase
box and press the Generate button. The Passphrase can be any text string
with a maximum of 31 alphanumeric characters.
2. You may enter the encryption key manually.
(The Passphrase method is recommended; however, you may need to enter
a manual key in order to meet the requirements of existing wireless equip-
ment on your network. If you are unsure, check with your System
Administrator.)
In either case, you should commit this Passphrase or Manual Key to memory.
You will probably need it for other wireless devices on the network.
Once you have chosen your key encryption method and entered either the
Passphrase or manual key, click the Apply button and the encryption portion of
the setup is complete.
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Instant BroadbandTM Series

EtherFast® Wireless Access Point + Cable/DSL Router with 4-Port Switch
26
• Channel Select the appropriate channel from the list provided to correspond
with your network settings, between 1 and 11.All points in your wireless net-
work must use the same channel in order to function correctly. Verify
that the correct channel is selected and click the Enable button to set
it.
• DHCP Server This field shows the status of the Router's DHCP server
function, which is either enabled or disabled.
•WANThese fields display the WAN IP Address, WAN Subnet Mask and
WAN Default Gateway IP address of the Router, as seen by external users
on the Internet.
• DNS (Domain Name System) IPAddress These fields show the IP
Address(es) of the DNS currently used by the Router. Multiple DNS IP set-
tings are common. In most cases, the first available DNS entry is used.
DHCP
A DHCP (Dynamic Host Configuration Protocol) Server automatically
assigns IP addresses to each computer on your network. Unless you already
have one, it is highly recommended that your router be set up as a DHCP
server.
• DHCP Server Check the Enable option to enable the DHCP server
option of the router. If you already have a DHCP server on your network,
set the router's DHCP option to Disable.
DHCP
25
This tab displays the current status of the Router; it reflects data and selec-
tions you’ve entered under the setup tab.
All of the information provided on this screen is read-only. To make changes,
select the Setup tab.
• Host Name This field shows the name of your Router. This entry is neces
sary for some ISPs.
• Firmware Version This field shows the installed version and date of the
firmware. Version dates are slightly more accurate than version numbers.
• Login This field shows whether you have enabled the use of the Router’s
PPPoE support and the status.
• LAN These fields display the current IP Address and Subnet Mask of the
Router, as seen by users on your internal network.
• Wireless (Enable/Disable). In order to utilize the wireless functions of the
Router, select Enable. If you do not wish do utilize any wireless functions,
make sure Disable is selected. (Note: No other wireless functions will be
available unless you enable this setting.)
• ESSID The ESSID is the unique name shared among all points in a wire-
less network. The ESSID must be identical for all points in the network. It is
case sensitive and must not exceed 32 characters. Make sure that all points
in the network are the same. Verify that you’re using the correct ESSID and
click the Enable button to set it.
Status
Instant BroadbandTM Series

This tab shows the status of Logging on the Router. If you enable logging,
the Router will keep a record of all sites on the Internet (i.e., e-mail, ftp sites,
etc.) that have been accessed through the Router.
• Access Log: Here you will either Enable or Disable the logging
feature.
• Send Log To: Here you will specify the address that you would
like the log to be sent to.
• Incoming/OutgoingAccess Log: Here you will specify whether
you want to make a record of Inernet sites that have been accessed
through the Router. Both outgoing or incoming addresses can be
recorded. (For instance, if you have web-server, you can keep a
record of the sites from which your web-server has been accessed.)
To view these logs, you need the Log Viewer software. You can download
the software from ftp://ftp.linksys.com/pub/befsr41/logviewer.exe.
Log
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EtherFast® Wireless Access Point + Cable/DSL Router with 4-Port Switch
27
Instant BroadbandTM Series
• Starting IP Address Enter a numerical value for the DHCP server to
start with when issuing IP addresses.
•Number of DHCP users Enter the maximum number of PCs that you
want the DHCP server to assign IP addresses to, with the absolute maxi-
mum being 253.
• DHCP Clients Table Click on the Clients Table button to show the cur-
rent DHCP Client information. (This information is stored in temporary
memory, so the list of clients could disappear, as in the following screen.)

3. Click Upgrade Firmware. A new page will appear.
4. Enter your Router’s administration password into the Password box.
5. Click the Browse button and find the firmware upgrade file that you
downloaded from the Linksys website. Double-click the upgrade file.
This will place the file into the “File Path:” box.
6. When the correct file is in the “File Path:” box, click the Upgrade button
and follow the instructions there. This will complete your firmware
upgrade.
EtherFast® Wireless Access Point + Cable/DSL Router with 4-Port Switch
30
EtherFast® Wireless Access Point + Cable/DSL Router with 4-Port Switch
Help
Here you will find links to all of the Utility’s internal support documentation,
a link to Linksys’s website, the application that upgrades the Router’s
firmware.
To upgrade the Router’s firmware:
1. Download the latest firmware version from the Linksys website
(www.linksys.com).
2. Go to the Help screen (above).
29
In order to upgrade the Router’s firmware, you must use
Internet Explorer 5.0 or higher, or Netscape Navigator 4.7 or
higher. Upgrading the firmware may cause the Router to be
reset to the factory defaults. Make a record of all settings
before attempting the upgrade.

EtherFast® Wireless Access Point + Cable/DSL Router with 4-Port Switch
Request feature also adds another measure of security to your network by
hiding your network ports. Both functions of the Block WAN Request fea-
ture make it more difficult for outside users to work their way into your
network.
Click the Apply button to save any changes.
Using IPSec Pass Through
•This feature lets you use IPSec Pass Through. To use this feature, click on
Enable next to “IPSec Pass Through,” then click on Apply.
•To disable IPSec Pass Through, click on Disable and then click on Apply.
Using PPTP Pass Through
•Point-to-Point Tunneling Protocol is the method used to enable VPN
(Virtual Private Networking) sessions. To enable this feature, click on
Enable next to PPTP Pass Through, and then click Apply.
•To disable this feature, click on Disable next to PPTP Pass Through, and
then click Apply.
Using Remote Management
•This feature allows you to manage your Router from a remote location, via
the Internet. To enable this feature, click on Enable, then click on Apply.
Using remote management is easy. Once you have enabled remote manage-
ment, enter http://<WAN IPAddress>:8080 into the browser of any PC on
the network and press the Enter key. You will then be able to alter the Router
configuration settings.
•To disable Remote Management, click on Disable, then click on Apply.
Using Remote Upgrade
• This feature allows you to “flash,” or upgrade,
your Router’s firmware from a remote location.
To enable Remote Upgrade, click on Enable,
then click on Apply.
• To disable this feature, click on Disable, then click on Apply.32
NNoottee::Upgrading may
cause the Router to be
reset to the factory
defaults. Make a record of
all settings before attempt-
ing the upgrade.
Filters
Filters block specific internal users from accessing the Internet.You can set
up a filter through an IP address or a network Port number.
To Modify Filter Settings
•Enter the IP addresses you wish to filter into the IP address fields. The
users who have these IP addresses will not be able to access the Internet.
•You can also filter users by entering their network port number and proto-
col (UDP, TCP or both). Enter the port numbers and protocol you want to
filter into the port numbers fields. Users who are connected to the Router
will no longer be able to access any port number listed there.
Block WAN Request
•By enabling the Block WAN Request feature, you can prevent your network
from being pinged, or detected, by other Internet users. The Block WAN
Filters
Instant BroadbandTM Series
31

EtherFast® Wireless Access Point + Cable/DSL Router with 4-Port Switch
Dynamic Routing
With Dynamic Routing you can automatically adjust to physical changes in
the network's layout. The router, using the RIP protocol, determines the net-
work packets’ route based on the fewest number of hops between the source
and the destination. The RIP protocol regularly broadcasts routing informa-
tion to other routers on the network. To set up Dynamic Routing:
1. Choose the correct working mode. Gateway Mode should be used if your
Linksys router is hosting your network's connection to the Internet.
Router Mode should be selected if the router exists on a network with
other routers.
2. In the TX field, choose the protocol by which you transmit data on the
network.
3. In the RX field, choose the protocol by which the Router receives net-
work data.
4. Click the Apply button to save your changes.
Dynamic Routing
34
For
Port forwarding sets up public services on your network. When users from the
Internet make certain requests of your network, the router will forward those
requests to the appropriate computer. The router's DHCP function must be
disabled to use Forwarding.
Forwarding is generally used to set up a web server, ftp server, or e-mail serv-
er on your network. To add a server using Forwarding:
1. Enter the port number or range used by the server. On the same line,
select TCP, UDP or Both. Enter the IP Address of the server that you
want the Internet users to be able to access. Refer to your software docu-
mentation for more information concerning which service port settings
may need to be changed, if any.
2. Configure as many entries as you would like until all of the link entries
are filled.
3. Click Apply to save the settings.
Forwarding
Instant BroadbandTM Series
33