Linksys WRT51AB Router Manual PDF (Setup & Configuration Guide)

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Dual-Band Wireless A+B Broadband Router

Chapter 6: The Router’s

Web-based Utility

Use the Router’s web-based utility to administer it. This chapter will describe

each web page in the Utility and each page’s key functions. The utility can be

accessed via your web browser through use of a computer connected to the

Router.

The

Setup

Password

Status

DHCP

Log

, and

Help

screens are available for

basic setup. For advanced setup, click the

Advanced

tab to access these

screens:

Advanced Wireless

(including

802.1x

Filters

Port Forwarding

Routing

DMZ Host

, and

MAC Address Clone

To access the web-based utility, launch Internet Explorer or Netscape

Navigator, and enter the Router’s default IP address,

192.168.1.1

, in the

Address

field. Then press

Enter

A password request page, shown in Figure 6-2 will pop up. (Windows XP users

will see a

Connect to 192.168.1.1

window, shown in Figure 6-3). Leave the

User Name

field blank, and enter

admin

(the default password) in the

Password

field.

Then click the

button.

Instant Wireless

Series

To configure the Router for your wireless network(s), perform these steps:

A. To enable 5GHz, 802.11a wireless networking, make sure the 5GHz,

802.11a

Enable

radio button is selected. Then click the

Change 5GHz

Settings

button, and customize the SSID, Channel, and WEP encryption

settings as needed. Then click the

Apply

button to save your changes. For

more information, refer to “Chapter 6: The Router’s Web-based Utility.”

To enable 2.4GHz, 802.11b wireless networking, make sure the 2.4GHz,

802.11b

Enable

radio button is selected. Then click the

Change 2.4GHz

Settings

button, and customize the SSID, Channel, and WEP encryption

settings as needed. Then click the

Apply

button to save your changes. For

more information, refer to “Chapter 6: The Router’s Web-based Utility.”

If you haven’t already done so, click the

Apply

button to save your Setup

settings. Close the web browser.

Restart your computers so that they can obtain the Router’s new settings.

If you need more details or advanced setting information, please refer to

“Chapter 6: The Router’s Web-based Utility” or the Linksys support web-

site at

support.linksys.com

Test the setup by opening your web browser from any computer and enter-

ing

http://www.linksys.com/registration

Congratulations! You’ve successfully configured the Router.

If you are unable to reach our website, you may want to review what you

did in this section or refer to “Appendix A: Troubleshooting.”

Proceed to “Chapter 6: The Router’s Web-based Utility” for more details

and advanced settings information.

Overview

How to Access the Web-based Utility

Figure 6-1

Figure 6-2

Figure 6-3

Figure 5-8

Page 17 / 69

Dual-Band Wireless A+B Broadband Router

Automatic Configuration - DHCP

By default, the Router’s Configuration Type is set to Automatic

Configuration - DHCP, and it should be kept only if your ISP supports

DHCP or you are connecting through a dynamic IP address.

To apply any of the settings you change on this page, click the

Apply

button.

To cancel any changes you’ve entered on this page, click the

Cancel

button.

To get more information about the features, click the

Help

button.

Instant Wireless

Series

Figure 6-5

To apply any of the settings you change on a page, click the

Apply

button.

cancel any changes you’ve entered on any page, click the

Cancel

button. To get

additional information about any screen’s features, click the

Help

button.

The

Setup

screen is the first screen you see when you access the web-based

utility. If you have already installed and set up the Router, you have already

seen this screen and properly configured all of the screen’s values.

Firmware Version

This shows the version and date of the firmware you are

using. Future versions of the Router’s firmware will be posted and

available

for download on the Linksys website at

www.linksys.com

Host Name

and

Domain Name

These fields allow you to supply a host and

domain name for the Router. Some ISPs, usually cable ISPs, require these

names as identification. 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.

Configuration Type

The Router supports four connection types: Automatic

Configuration - DHCP, Static IP, PPPoE, and PPTP. Each

Setup

screen and

available features will differ depending on what kind of connection type you

select.

Setup

Note:

You can verify that the Internet configuration settings are cor-

rect by successfully connecting to the Internet.

Note:

For added security, you should always change the password

through the Password screen of the web-based utility.

Page 18 / 69

Dual-Band Wireless A+B Broadband Router

Instant Wireless

Series

PPPoE

Some DSL-based ISPs use PPPoE (Point-to-Point Protocol over Ethernet)

to establish Internet connections. If you are connected to the Internet

through a DSL line, check with your ISP to see if they use PPPoE. If they

do, you will have to enable PPPoE.

User Name and Password

Enter the

User Name

and

Password

provided

by your ISP.

Connect on Demand: Max Idle Time

You can configure the Router to cut

the Internet connection after it has been inactive for a specified period of

time (Max Idle Time). If your Internet connection has been terminated due

to inactivity, Connect on Demand enables the 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, click the radio button. In

the

Max Idle Time

field, enter the number of minutes you want to have

elapsed before your Internet connection terminates.

Figure 6-7

Static IP

If you are required to use a permanent IP address to connect to the Internet,

then select

Static IP

Specify Internet IP Address

This is the Router’s IP address, when seen

from the WAN, or the Internet. Your ISP will provide you with the IP

Address you need to specify here.

Subnet Mask

This is the Router’s Subnet Mask, as seen by external users

on the Internet (including your ISP). Your ISP will provide you with the

Subnet Mask.

Default Gateway

Your ISP will provide you with the Default Gateway

Address, which is the ISP server’s IP address.

DNS 1 (Required) and DNS 2-3 (Optional)

Your ISP will provide you with

at least one DNS (Domain Name System) Server IP Address.

To apply any of the settings you change on this page, click the

Apply

button.

To cancel any changes you’ve entered on this page, click the

Cancel

button.

To get more information about the features, click the

Help

button.

Figure 6-6

Page 19 / 69

Dual-Band Wireless A+B Broadband Router

Instant Wireless

Series

Specify Internet IP Address

This is the Router’s IP address, when seen

from the Internet. Your ISP will provide you with the IP Address you need

to specify here.

Subnet Mask

This is the Router’s Subnet Mask, as seen by external users

on the Internet (including your ISP). Your ISP will provide you with the

Subnet Mask.

Default Gateway

Your ISP will provide you with the Default Gateway

Address.

User Name and Password

Enter the

User Name

and

Password

provided

by your ISP.

Connect on Demand: Max Idle Time

You can configure the Router to cut

the Internet connection after it has been inactive for a specified period of

time (Max Idle Time). If your Internet connection has been terminated due

to inactivity, Connect on Demand enables the 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, click the radio button. In

the

Max Idle Time

field, enter the number of minutes you want to have

elapsed before your Internet connection terminates.

Keep Alive Option: Redial Period

If you select this option, the Router will

periodically check your Internet connection. If you are disconnected, then

the Router will automatically re-establish your connection. To use this

option, click the radio button next to

Keep Alive

. To use this option, click

the radio button next to

Keep Alive

. In the

Redial Period

field, you specify

how often you want the Router to check the Internet connection. The default

Redial Period is 30 seconds.

To apply any of the settings you change on this page, click the

Apply

button.

To cancel any changes you’ve entered on this page, click the

Cancel

button.

To get more information about the features, click the

Help

button.

LAN IP Address and LAN Subnet Mask

The values for the Router’s IP

Address and Subnet Mask are shown here. The default values are 192.168.1.1

for the LAN IP Address and 255.255.255.0 for the Subnet Mask.

5GHz, 802.11a Wireless

To enable 5GHz, 802.11a wireless networking, make

sure the

Enable

radio button is selected. Click the

Change 5GHz Settings

but-

ton to customize the 802.11a configuration (see Figure 6-9).

Keep Alive Option: Redial Period

If you select this option, the Router will

periodically check your Internet connection. If you are disconnected, then

the Router will automatically re-establish your connection. To use this

option, click the radio button next to

Keep Alive

. In the

Redial Period

field,

you specify how often you want the Router to check the Internet connection.

The default Redial Period is 30 seconds.

To apply any of the settings you change on this page, click the

Apply

button.

To cancel any changes you’ve entered on this page, click the

Cancel

button.

To get more information about the features, click the

Help

button.

PPTP

Point to Point Tunneling Protocol (PPTP) is a service that applies to con-

nections in Europe only.

Figure 6-8

Important:

For ADSL users, if you enable PPPoE, remember to

remove any PPPoE applications that are already installed on any of

your PCs.

Page 20 / 69

Dual-Band Wireless A+B Broadband Router

Turbo Mode

This enables high-speed connections, but severely limits

range. Turbo Mode must be enabled on both the Router and the wireless PCs

to function. Turbo Mode is not compatible with Windows XP and functions

only with Linksys 5GHz, 802.11a wireless adapters.

Select

Enable

to increase the speed of your wireless transmissions up to 72

Mbps. Keep in mind that the Router’s range diminishes in Turbo Mode. If

you do not wish to utilize Turbo Mode, select

Disable

Channel

Select the appropriate channel from the list provided to corre-

spond with your network settings, between 36 and 64. All devices in your

wireless network must use the same channel in order to function correctly.

If you want the Router to automatically scan for a clear channel, then click

the checkbox.

WEP (Encryption)

An acronym for Wired Equivalent Privacy, WEP is an

encryption method used to protect your wireless data communications.

WEP uses 64-bit, 128-bit, or 152-bit keys to provide access control to your

network and encryption security for every data transmission. To decode a

data transmission, each device in a network must use an identical key.

Higher encryption levels offer higher levels of security, but due to the com-

plexity of the encryption, they may decrease network performance. Click

the

Edit WEP Settings

button to configure the WEP keys for your 5GHz,

802.11a network (see Figure 6-10).

Check all the values, and click the

Apply

button to save your 5GHz, 802.11a

settings. To cancel any changes you’ve entered on this page, click the

Cancel

button. To get more information about the features, click the

Help

button.

Instant Wireless

Series

2.4GHz 802.11b Wireless

To enable 2.4GHz, 802.11b wireless networking,

make sure the

Enable

radio button is selected. Click the

Change 2.4GHz

Settings

button to customize the 802.11b configuration (see Figure 6-11).

5GHz, 802.11a

The

5GHz, 802.11a

screen allows you to configure your 5GHz, 802.11a

network settings.

SSID

The SSID is the network name shared among all points in a wireless

network. The SSID must be identical for all points in the wireless network.

It is case-sensitive and must not exceed 32 characters (use any of the char-

acters on the keyboard). Make sure this setting is the same for all points in

your wireless network. For added security, you should change the default

SSID (

linksys

) to a unique name.

Note:

If Turbo Mode is enabled, then auto-scan will not function, and

you must select one of the following channels:

, or

Note:

If auto-scan is enabled, then you cannot specify a channel setting.

Figure 6-9

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