Linksys BEFSR41W User manual

Brand: Linksys

Model: BEFSR41W

Category: WLAN access points

Type: User manual

This manual is also suitable for

EtherFast BEFSR41W

Instant Broadband™ Series

EtherFast

Cable/DSL

Wireless-Ready Router

with 4-Port Switch

Use this Guide to install:

BEFSR41W EtherFast Cable/DSL Wireless-Ready Router with 4-Port Switch

User Guide

mark of Linksys. Microsoft, Windows, and the Windows logo are registered trademarks

of Microsoft Corporation. All other trademarks and brand names are the property of their

respective proprietors.

LIMITED WARRANTY

Linksys guarantees that every Instant Broadband EtherFast

Cable/DSL Wireless-Ready

Router with 4-Port Switch will be free from physical defects in material and workmanship

for one year from the date of purchase, when used within the limits set forth in the

Specifications chapter of this User Guide. If the product proves defective during this war-

ranty period, call Linksys Technical Support in order to obtain a Return Authorization

Number. BE SURE TO HAVE YOUR PROOF OF PURCHASE AND A BARCODE FROM

THE PRODUCT'S PACKAGING ON HAND WHEN CALLING. RETURN REQUESTS CAN-

NOT BE PROCESSED WITHOUT PROOF OF PURCHASE. When returning a product,

mark the Return Authorization Number clearly on the outside of the package and include

a copy of your original 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 prod-

ucts, 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

Cable/DSL Wireless-Ready 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 reasonable protection

against harmful interference in a residential installation. This equipment generates, uses,

and can radiate radio frequency energy and, if not installed and used according to the

instructions, may cause harmful interference to radio communications. 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 turn-

ing 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 devices

• Connect the equipment to an outlet other than the receiver’s

• Consult a dealer or an experienced radio/TV technician for assistance

UG-BEFSR41W-051402B BW

Log 30

Help 31

UPnP 32

Filters 33

Port Forwarding 35

Dynamic Routing 39

Static Routing 40

DMZ Host 41

MAC Address Cloning 43

Appendix A: Troubleshooting 44

Common Problems and Solutions 45

Frequently Asked Questions 46

Appendix B: How to Obtain Your ISP’s E-mail

& Web Addresses 50

Appendix C: Installing the TCP/IP Protocol 53

Appendix D: Twisted-Pair Cabling 55

Crimping Your Own Network Cables 56

Appendix E: Glossary 57

Appendix F: Specifications 63

Environmental 64

Appendix G: Warranty Information 65

Appendix H: Contact Information 66

Table of Contents

Chapter 1: Introduction 1

Linksys Cable/DSL Wireless-Ready Router 1

Features 1

Package Contents 2

Minimum Requirements 2

Chapter 2: Getting to Know the Cable/DSL

Wireless-Ready Router 3

The Cable/DSL Wireless-Ready Router’s Rear Panel 3

The Wireless PC Card (not included) 4

The Reset Button 4

The Cable/DSL Wireless-Ready Router’s Front Panel LEDs 5

Chapter 3: Connecting the Cable/DSL

Wireless-Ready 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

Cable/DSL Wireless-Ready Router 10

Chapter 4: Adding Wireless Capabilities to

Your Router 12

Chapter 5: Configuring Your Network with the

Cable/DSL Wireless-Ready Router 16

Configuring the Cable/DSL Wireless-Ready Router 16

Chapter 6: The Cable/DSL Wireless-Ready

Router’s Web-based Utility 20

Quick and Easy Administration 20

Setup 21

Setting WEP Encryption 24

Password 26

Status 27

DHCP 29

Instant Broadband

Series

EtherFast

Cable/DSL Wireless-Ready Router with 4-Port Switch

Chapter 1: Introduction

The Linksys Cable/DSL Wireless-Ready Router

Congratulations on your purchase of an EtherFast

Cable/DSL Wireless-Ready

Router with 4-Port Switch. The EtherFast

Cable/DSL Wireless-Ready Router with

4-Port Switch provides the ideal solution for connecting your network to a high-

speed broadband Internet connection and a 10/100 Fast Ethernet backbone, with the

option to add wireless capabilities. Configurable as a DHCP server for your exist-

ing network, the Router acts as the only externally recognized Internet gateway on

your local area network (LAN) and serves as an Internet NAT firewall against

unwanted outside intruders. Plus, the Router functions as an Access Point when you

add a Wireless Network PC card (not included) to enable wireless connectivity.

A typical router relies on a separate hub or a switch to share its Internet connection,

but the Linksys EtherFast

Cable/DSL Wireless-Ready Router with 4-Port Switch

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-ready

router and switch technology eliminates the need to buy an additional hub or

switch—just add a Wireless Network PC card to connect the router to your wireless

network. Now your entire wireless network can enjoy blazing broadband Internet

connections supported by its robust switched backbone. With the dual-function

speed and power of the EtherFast

Cable/DSL Wireless-Ready Router with 4-Port

Switch, your network will take off at speeds faster than you ever imagined possible.

• Expandable to Support Wireless Networking

• Compatible with Universal Plug and Play (UPnP)

• MAC Address Filtering

• Configurable through Your Networked PC’s Web Browser

• Supports IPSec and PPTP Pass-Through

• Internal 4-Port Switch Dramatically Speeds Up Your Gaming

• Able to Act as a DHCP Server for Your Existing Network

• Wireless Capabilities Available with Use of Optional WPC11 (sold separately)

••

Connects to a Broadband Modem, a 10/100 Ethernet Backbone, or a

Wireless 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 128-Bit WEP Encryption

• Free Technical Support—24 Hours a Day, 7 Days a Week, Toll-Free US Calls

• 1-Year Limited Warranty

Features

EtherFast

Cable/DSL Wireless-Ready Router with 4-Port Switch

Chapter 2: Getting to Know the

Cable/DSL Wireless-Ready Router

The Cable/DSL Wireless-Ready Router’s Rear Panel

The back 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. These ports will

auto-detect the use of crossover or straight RJ-45

cables.

Power The Power Port is where you will connect the

included AC Power adapter.

PCMCIA Slot This is where you can connect the optional wireless

PC card (not included) for wireless features.

Figure 2-1

Package Contents

• One Linksys EtherFast

Cable/DSL Wireless-Ready Router with 4-Port

Switch (1)

• One Power Adapter (2)

• One TechHelper CD-ROM (3)

• One User Guide (4)

• Quick Installation (not shown)

• One Registration Card (not shown)

Minimum Requirements

• Network Adapter with Ethernet (UTP CAT 5) Cabling and TCP/IP Protocol

Installed per PC

• Internet Explorer 4.0 or Netscape Navigator 4.7 or Higher for Web-Based

Configuration

• Cable or DSL Modem with Ethernet Connection and Internet Access

• CD-ROM Drive

• WPC11 for Wireless Connection (sold separately)

Figure 1-1

Instant Broadband

Series

EtherFast

Cable/DSL Wireless-Ready Router with 4-Port Switch

The Cable/DSL Wireless-Ready Router’s Front Panel LEDs

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. During firmware

upgrades, this will also flash.

Power Green. The Power LED illuminates when the Router is pow-

ered on.

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.

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 sending or

receiving data over that port.

100 Orange. The 100 LED illuminates when a successful

100Mbps connection is made through the corresponding

port.

Figure 2-3

The Wireless PC Card (not included)

To add wireless capabilities, a WPC11 (sold separately) is required.

Power off the Router. Insert the WPC11 in the manner shown above

in the warning label. Push the WPC11 into the BEFSR41W until it

is securely held in place by the PCMCIA Slot.

The Reset Button

To use the Reset button:

Unplug the power adapter from the Router. Then, plug the power

adapter back into the Router. Press the Reset button. The Diag LED will flash

after three seconds.

To restore the factory default settings, Unplug the power adapter from the

Router. Press the Reset button and hold for three seconds while plugging the

power adapter back into the Router.

Figure 2-2

Instant Broadband

Series

EtherFast

Cable/DSL Wireless-Ready Router with 4-Port Switch

The Wireless-PC Card

The Reset Button

Chapter 3: Connecting the

Cable/DSL Wireless-Ready

Router to Your Network

Overview

Unlike a simple hub or switch, the setup of the Cable/DSL Wireless-Ready

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

Cable/DSL Wireless-Ready Router:

• PPPoE with username and password (for some DSL users)

• Your broadband-configured PC’s static 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

If your broadband access installer did not leave you this information, 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 a computer in a TCP/IP network. Static IP addresses are usually assigned to

networked devices that are consistently accessed by multiple users, such as

server PCs, or a 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 con-

figuration.

About Static & Dynamic IP Addresses

EtherFast

Cable/DSL Wireless-Ready Router with 4-Port Switch

WLAN Green. The WLAN LED illuminates when a wireless net-

work is active.

WAN Green. The WAN LED illuminates when a successful con-

nection is made between the Router and your Broadband

device or network. When blinking, the Router is sending or

receiving data over the broadband port.

Instant Broadband

Series

6. To use the Reset button: While holding down the Reset button, unplug the

power adapter from the Router. Wait three seconds while continuing to hold

down the Reset button. Then plug the power adapter back into the Router.

The Diag LED will flash twice. During the second flash, release the Reset

button. This will restore all the defaults.

7. Power on your PC.

The Hardware Installation is complete. Continue to the next page to con-

figure your PCs and Router.

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

mmuusstt

obtain 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

HHooww ttoo OObbttaaiinn YYoouurr IISSPP’’ss EE-mmaaiill && WWeebb AAddddrreesssseess..

EtherFast

Cable/DSL Wireless-Ready Router with 4-Port Switch

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. A

dynamic IP address might 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 on to 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 Cable/DSL Wireless-Ready 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.

3. Connect the network cable from your Cable or DSL modem to the WAN port

on the back of the Router.

4. Connect the power-adapter cable to the Power port on the back of the Router,

then plug the other end 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 WAN LED on the front of the Router. The Link LED will illuminate if

the power is on and the modem is ready.

Instant Broadband

Series

4. Click the Properties button, and then choose the IP Address tab. Select

Obtain an IP address automatically. (See Figure 3-2.) Click on the

Gateway tab and make sure that all fields there are empty. Click OK.

5. 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 your PC. Click Yes.

Repeat steps 1-6 for each PC on your network.When all PCs are config-

ured, continue on to set up the Router using the Router’s Web-based

Utility.

Figure 3-2

EtherFast

Cable/DSL Wireless-Ready Router with 4-Port Switch

Now that your Router is physically installed, you will have to configure your

PCs to accept the IP addresses that your Router will provide. If using the

default Windows TCP/IP network configuration, no changes are required; just

restart your PC so it will obtain an IP address from the Cable/DSL Wireless-

Ready Router.

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. (See Figure 3-1.)

These instructions apply only to Windows 95, 98 and Millennium

machines. For TCP/IP setup under Windows NT, Windows 2000,

or Windows XP, please refer to your Microsoft Windows docu-

mentation.

Configuring Your PCs to Connect to the Cable/DSL

Wireless-Ready 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.

Figure 3-1

Instant Broadband

Series

3. Configure the wireless functions of the web utility using the following

instructions. (Refer to Chapter 6 for more information.)

A. Access the web utility by opening your web browser and typing

http://192.168.1.1 in the browser’s Address box. (This number is the

default IP address of your Router.) Press Enter. (See Figure 4-2.)

B. After entering the address into the web browser, a password request

page will pop up. (See Figure 4-3.) Leave the User Name field empty,

but type admin into the Password field.

C. The basic Setup screen is the first screen you will see when you access the

utility, but is the only one you need to set up your Wireless PC Card.

(See Figure 4-4.) If you have already installed and set up your router, you

have already seen this screen and have already properly configured all of

the screen’s values. More detailed explanations and instructions can be

found by clicking the page’s Help button. To clear any values you’ve

entered, click Cancel and re-enter the information. To apply any set-

tings that you have changed, click the Apply button. Once all settings

are correct, click Continue.

Setup

Figure 4-2

Figure 4-3

EtherFast

Cable/DSL Wireless-Ready Router with 4-Port Switch

Chapter 4: Adding Wireless

Capabilities to Your Router

Now that your Cable/DSL Wireless-Ready Router is wired into your network,

you can make your Router wireless. You can also wait until a later time. You

will need a WPC11 Wireless PC Card (sold separately.)

1. Power off the Router.

2. Locate the PCMCIA slot on the back of the Router. Insert the Wireless PC

Card into the PCMCIA slot in the direction shown in Figure 4-1. It is very

important to install it with the LEDs facing up and in the correct direction

or damage to the Router can occur. Push the Wireless PC Card into the slot

until it is securely in place.

Make sure to insert the WPC11 Wireless PC Card in the direction

shown in the warning label below.

Figure 4-1

Instant Broadband

Series

• Access Control Provides access to your network for other PCs. You’ll need

to enter the MAC Address, then click on Add for any PC that you want to

add. Click on Apply when finished.

• 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.

• WEP (Mandatory/Disable). In order to utilize WEP encryption, select

Mandatory. If you do not wish do utilize WEP encryption, make sure

Disable is selected. See the Section on Setting WEP Encryption for more

information.

• 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.

If you haven’t done so already, to apply any settings that you have changed,

click the Apply button. Once all settings are correct, click Continue.

EtherFast

Cable/DSL Wireless-Ready Router with 4-Port Switch

The following section will provide information on setting up your wireless

connection once you have the Wireless PC Card.

• ESSID The ESSID is the unique name that is shared among all points in a

wireless 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 are using the correct

ESSID.

Figure 4-4

NNoottee::

The

Setup page

shown in this

graphic may

differ from

yours.

Instant Broadband

Series

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. (See Figure 5-2.)

3. The Cable/DSL Wireless-Ready Router’s Setup page will appear. (See Figure

5-3.)

Figure 5-2

Figure 5-3

NNoottee::

The

Setup page

shown in this

graphic may

differ from

yours.

EtherFast

Cable/DSL Wireless-Ready Router with 4-Port Switch

1716

Chapter 5: Configuring Your

Network with the Cable/DSL

Wireless-Ready Router

Configuring the Cable/DSL Wireless-Ready Router

Now that your Cable/DSL Wireless-Ready Router is wired into your network,

you can begin configuring your system.

Note:If your Windows system supports UPnP, Windows will offer to create a

desktop shortcut to the Router. Click OK to create the desktop icon, then dou-

ble-click on the icon to connect to the Router. Otherwise, connect to the Router

manually, as follows.

1. Open your web browser and type http://192.168.1.1 in the browser’s Address

box. (See Figure 5-1.) 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

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• If you are running Internet Explorer v5 or better, click

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. Remove the checks from all three boxes. Click

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continue.

Figure 5-1

Instant Broadband

Series

1. Click on the button next to PPPoE.

2. Enter the User Name you use to log on to your Internet connection.

3. Enter your corresponding Password.

RAS (Remote Access Service) is a service used in Singapore only. If you are

using a RAS connection, check with your ISP for the necessary setup infor-

mation.To enable RAS:

1. Click on the button next to RAS.

2. Enter the User Name you use to log on to your Internet connection.

3. Enter your corresponding Password.

RAS Plan Select the type of plan you have.

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. Click on the button next to Connect on Demand to

Enable the option.

Keep Alive Option 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 but-

ton next to Keep Alive to select it.

5. When you have properly configured the Setup page, click Apply, and then

click Continue.

6. Reset the power on the cable or DSL modem, and then restart the com-

puter so the computer can obtain the new Router information.

Your Cable/DSL Wireless-Ready Router is now configured to your net-

work. 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

successfully installed into each PC you plan on configuring

before you continue.

EtherFast

Cable/DSL Wireless-Ready Router with 4-Port Switch

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 IP Address 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, enter the ESSID and Channel for your wireless net-

work. You can provide access to your network for other PCs with Access

Control. You’ll need to enter the MAC Address, then click on Add for any

PC that you want to add. Click on Apply when finished. 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. You must use a wireless PC card (sold separately) to

use this and any other wireless feature.

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 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 Gateway Address,and DNS fields provided by the

ISP.

PPPoE or RAS.

PPPoE (Point-to-Point Protocol over Ethernet) is used by DSL-based

ISPs 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 by selecting PPPoE in the login section. If you do enable

PPPoE, remember to remove any existing PPPoE applications already on

any of your PCs. To enable PPPoE:

NNoottee::

All of this information should be readily available from your ISP.

Instant Broadband

Series

Setup

The basic Setup screen is the first screen you will see when you access the Utility.

If you have already installed and set up your router, you have already seen this

screen and have already properly configured all of the screen’s values.

• 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 they are 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.

NNoottee::

The

Setup page

shown in this

graphic may

differ from

yours.

Figure 6-3

EtherFast

Cable/DSL Wireless-Ready Router with 4-Port Switch

Chapter 6: The Cable/DSL

Wireless-Ready 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 net-

work by typing http://192.168.1.1 into the PC’s web browser address window.

(See Figure 6-1.)

After entering the address into the web browser, a password request page will

pop up. (See Figure 6-2.) Leave the User Name field empty, but type admin

into the Password field.

On the following pages you will find brief descriptions and important functions

of each utility web page. 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 the information. To apply any settings

that you have changed on any page, click the Apply button. Once all settings

are correct, click Continue.

Figure 6-1

Figure 6-2

Instant Broadband

Series

1. Click on the button next to PPPoE.

2. Enter the User Name you use to log on to your Internet connection.

3. Enter your corresponding Password.

RAS (Remote Access Service) is a service used in Singapore only. If you are

using a RAS connection, check with your ISP for the necessary setup

information.To enable RAS:

1. Click on the button next to RAS.

2. Enter the User Name you use to log on to your Internet connection.

3. Enter your corresponding Password.

RAS Plan Select the type of plan you have.

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. Click on the button next to Connect on Demand to

enable the option.

Keep Alive Option 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 but-

ton next to Keep Alive to select it.

Password

In order for your changes to take effect, click the

Apply button.

EtherFast

Cable/DSL Wireless-Ready Router with 4-Port Switch

• ESSID The ESSID is the unique name that is shared among all points in a

wireless 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 are using the correct

ESSID.

• Access Control Provides access to your network for other PCs. You’ll need

to enter the MAC Address, then click on Add for any PC that you want to

add. Click on Apply when finished.

• 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.

• WEP (Mandatory/Disable). In order to utilize WEP encryption, select

Mandatory. 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 Automatically,

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 or RAS.

PPPoE (Point-to-Point Protocol over Ethernet) is used by DSL-based

ISPs 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 by selecting PPPoE in the login section. If you do

enable PPPoE, remember to remove any existing PPPoE applications

already on any of your PCs. To enable PPPoE:

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3. The following screen will appear, verifying that you are enabling WEP

Encryption. Press the OK button to continue. (See Figure 6-4.)

4. The following screen will appear, where you will choose your WEP

Encryption settings. For the Authentication Type, select Open System

(default setting).(See Figure 6-5.)

5. For the Encryption, choose 64 Bit Encryption or 128 Bit Encryption. The

one you choose must also be used on all your other network devices. Enter

Hexadecimal characters, which are the letters “A” through “F” and the num-

bers “0” through “9” into the fields provided. If you have set a WEP

Encryption on a wireless device on your network, then you must use the

same key set. All devices on a network must use the same key set.

6. Click the Save button, then the Close button and the encryption portion of

the setup is now complete.

NNoottee::

The

screen

shown in

this graphic

may differ

from yours.

Figure 6-4

Figure 6-5

EtherFast

Cable/DSL Wireless-Ready Router with 4-Port Switch

WEP (Wired Equivalent Privacy) Encryption is a method of encrypting data

that is transmitted over your wireless network to ensure 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 net-

work as they would over a wired network. This level of security is above that

already provided by the use of password protection by your network operating

system.

The present standard for this encryption, set by the IEEE (the Institute of

Electrical and Electronics Engineers), is defined as 40-bit (sometimes also

called 64-bit) encryption. Some vendors, including Linksys, offer the higher

128-bit encryption. These numbers refer to the complexity of the algorithms

generated 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 pro-

vide increasingly secure 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, but is strongly recommended. Your need for security can only be

determined by you. If your security needs are such that ordinary password pro-

tection is sufficient, you may decide not to use the additional WEP Encryption.

However, should your security needs dictate it, the Cable/DSL Wireless-Ready

Router can provide as secure a connection as is available in wireless network-

ing.

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 that

is not essential for Router operation, but is strongly recommended.

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This tab displays the current status of the Router; it reflects data and selections

that you have 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 of the firmware.

• 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.

•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) IP Address 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.

Status

Figure 6-7

EtherFast

Cable/DSL Wireless-Ready 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 password

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.

Figure 6-6

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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.

• 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 maximum

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.)

Help

DHCP

Figure 6-8

EtherFast

Cable/DSL Wireless-Ready Router with 4-Port Switch

• DHCP Release Click the DHCP Release button to release the WAN IP

address from the Router.

• DHCP Renew Click the DHCP Renew button to get the new WAN IP

address from your ISP.

• DHCP Clients Table Click on the Clients Table button to show the current

DHCP Client information. (This information is stored in temporary memo-

ry, so the list of clients could disappear.)

DHCP

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Help

Under the Help tab, you’ll find links to all of the Router’s internal support doc-

umentation, including the application that upgrades the Router’s firmware.

New firmware versions are posted at www.linksys.com and can be downloaded

for free. If the Router can access the Internet already, there’s no need to down-

load a newer firmware version, unless that version has a new feature that you

want to use. Loading new firmware onto the Router might not enhance the

speed or the quality of your connection speed.

Figure 6-10

EtherFast

Cable/DSL Wireless-Ready Router with 4-Port Switch

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.

• Incoming/Outgoing Access Logs: Here you will specify whether

you want to make a record of Internet sites that have been accessed through

the Router. Both outgoing or incoming addresses can be recorded. (For

instance, if you have a web server, you can keep a record of the sites from

which your web server has been accessed.)

• E-Mail Logs: Select Send Incoming Log or Send Outgoing Log. Enter the

Email address and Subject for the log. Add the IP Address of the SMTP

E-Mail Server and the Port Number.

• E-Mail Schedule: Choose to send the log When log is full or enter a spe-

cific time. Select the Timezone in the drop-down menu.

• Click the Apply button to save any changes.

Log

Figure 6-9

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Filters block specific internal users

from accessing the Internet. You

can set up a filter through an IP

address or a network port number.

Filtered Private IPRange

• To set up a filter using IP

addresses, enter the range of IP

addresses you wish to filter in

the IP address fields. Users who

have filtered IP addresses will

not be able to access the Internet

at all. If you only want to filter

one IP address instead of a

range of IP addresses, enter the

same value into both fields.

Filtered Private Port Range

• To filter users by network port

number, enter a network port

number or a range of network ports. Select the protocol for each port number you

want to filter, TCP or UDP. Enter the port numbers you want to filter in the port

numbers fields. Users connected to the Router will no longer be able to access any

port number listed there.

Editing MAC Filter Setting

• This feature filters the network adapter’s specific MAC address from going out to

the Internet.

• To check your network adapter’s MAC address, run “winipcfg” or “ipconfig” in

the command prompt. To set the MAC filter, click the Edit MAC Filter Setting

button. When a second window appears, select the range in the drop-down box,

and at the MAC number prompt, enter the 12-digit MAC address you want to fil-

ter. Click the Apply button and then the Continue button before closing the win-

dow.

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 Request feature

also adds another measure of security to your network by hiding your network

ports. Both functions of the Block WAN Request feature make it more difficult for

outside users to work their way into your network.

Filters

Figure 6-12

EtherFast

Cable/DSL Wireless-Ready Router with 4-Port Switch

This screen shows the Universal Plug and Play services that are available.

Microsoft ME and XP feature Universal Plug and Play (UPnP), which allows

automatic discovery and configuration of equipment attached to the LAN.

UPnP allows enabled applications to automatically manage the router.

There are two ways to begin the UPnP configuration. Choose one:

• Double-click My Network Place. Then double-click the Linksys

BEFSR41W icon.

• Or, start your Web interface. Type in the address http://192.168.1.1.

Using either method, you will see the Setup tab. Click the Advanced tab. Then

click the UPnP tab.

On the UPnP tab, you have three features to choose from:

• Enable UPnP Services This allows Windows XP to activate the UPnP fea-

ture for automatic configuration.

• Allow users to make configuration changes through UPnP This allows

you to make manual changes while still using the UPnP feature.

• Allow users to disable Internet access This allows you to prohibit any and

all Internet connections.

Click Apply to accept changes, or click Cancel to cancel changes.

UPnP

Figure 6-11

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Linksys BEFSR41W User manual

Brand: Linksys

Model: BEFSR41W

Category: WLAN access points

Type: User manual

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