Linksys BEFSX41v1.52 Router Manual PDF (Setup & Configuration Guide)

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Cable/DSL Firewall Router with 4-Port Switch/VPN Endpoint

Specify an IP Address behind the DMZ Port:

If you have multiple PCs

connected to Port 4/DMZ via a hub or switch, you can specify which PC is

the DMZ host. To expose a computer with a specific IP address, enter that

computer’s IP address in this field. To get the IP address of a computer,

refer to “Appendix G: Finding the MAC Address and IP Address for Your

Ethernet Adapter.”

Specify a MAC Address behind the DMZ Port:

If you have multiple PCs

connected to Port 4/DMZ via a hub or switch, you can specify which PC is

the DMZ host. To expose a PC with a specific MAC address, enter that

computer’s MAC address in this field. To get the MAC address of a com-

puter, refer to “Appendix G: Finding the MAC Address and IP Address for

Your Ethernet Adapter.”

Click the

PCs behind DMZ Port

button to view all computers connected on

Port 4/DMZ (multiple computers can be connected via a hub or switch).

Current DMZ Host

The IP address of the current DMZ host is displayed here.

When finished, click the

Apply

button and click the

Continue

button to save

the settings. Otherwise, click the

Cancel

button to undo changes made on this

screen.

From the MAC Address Clone screen, shown in Figure 7-43, you can change

the Router’s WAN Mac Address.

The Router’s

MAC address

is a 12-digit code assigned to a unique piece of

hardware for identification, like a social security number. If your ISP requires

MAC address registration, find your adapter’s MAC address by following the

instructions in “Appendix G: Finding the MAC Address and IP Address for

Your Ethernet Adapter.”

To define a MAC address for the WAN port, click the first radio button next to

User Defined WAN MAC Address

, and enter the 12 digits of your adapter’s

MAC address in the on-screen fields. This “clones” your network adapter’s

MAC address onto the Router, so you do NOT have to call your ISP to change

the registered MAC address to the Router’s MAC address.

If you want to clone the MAC address of the PC you are CURRENTLY using

to configure the Router, then click the second radio button. The Router will

automatically detect your PC’s MAC address. It is recommended that the PC

registered with the ISP is used to open the MAC Address Clone page.

When finished making your changes on this screen, click the

Apply

button and

then the

Continue

button to save these changes, or click the

Cancel

button to

undo your changes.

MAC Address Clone

Figure 7-43

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DynDNS.org

To order DynDNS service, click the appropriate link at the top of the

DDNS

screen.

Username

Password

, and

Host Name

Enter the Username, Password, and

Host Name of the account you set up with DynDNS.org.

Internet IP Address

The Router’s current Internet IP Address is displayed

here. Because it is dynamic, this will change.

Status

The status of the DDNS service connection is displayed here.

When finished making your changes on this screen, click the

Apply

button and

then the

Continue

button to save these changes, or click the

Cancel

button to

undo your changes.

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The Router offers a Dynamic Domain Name System (DDNS) feature. DDNS

lets you assign a fixed host and domain name to a dynamic Internet IP address.

It is useful when you are hosting your own website, FTP server, or other serv-

er behind the Router.

Before you can use this feature, you need to sign up for DDNS service at one

of two DDNS service providers, DynDNS.org or TZO.

DDNS Service

The DDNS feature is disabled by default. To enable this fea-

ture, select your DDNS service provider,

DynDNS.org

TZO.com

, from the

drop-down menu.

The features available on the

DDNS

screen will vary, depending on which

DDNS service provider you use.

DDNS

Figure 7-44

Figure 7-45

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TZO.com

To sign up for a free, 30-day trial of TZO service, order TZO service, or man-

age your TZO service, click the appropriate link at the top of the

DDNS

screen.

Domain Name

Email Address

, and

TZO Password Key

Enter the Domain

Name, Email Address, and TZO Password Key of the service you set up with

TZO.

Internet IP Address

The Router’s current Internet IP Address is displayed

here. Because it is dynamic, this will change.

Status

The status of the DDNS service connection is displayed here.

When finished making your changes on this screen, click the

Apply

button and

then the

Continue

button to save these changes, or click the

Cancel

button to

undo your changes.

Appendix A: Troubleshooting

This appendix consists of two parts: “Common Problems and Solutions” and

“Frequently Asked Questions.” Provided are possible solutions to problems

regarding the installation and operation of the Router. If your situation is

described here, the problem should be solved by applying the corresponding

solution. If you can’t find an answer here, check the Linksys website at

www.linksys.com

I need to set a static IP address on a PC.

The Router, by default, assigns an IP address range of 192.168.1.100 to

192.168.1.150 using the DHCP server on the Router. To set a static IP address,

you can only use the ranges 192.168.1.2 to 192.168.1.99 and 192.168.1.151 to

192.168.1.254. Each PC or network device that uses TCP/IP must have a

unique address to identify itself in a network. If the IP address is not unique to

a network, Windows will generate an IP conflict error message.

You can assign

a static IP address to a PC by performing the following steps:

For Windows 95, 98, and Me:

A. Click

Start

Settings

, and

Control Panel

. Double-click

Network

B. In

The following network components are installed

box, select the

TCP/IP->

associated with your Ethernet adapter. If you only have one Ethernet adapter

installed, you will only see one TCP/IP line with no association to an Ethernet

adapter.

Highlight it and click the

Properties

button.

C. In the

TCP/IP properties

window, select the

IP address

tab, and select

Specify an IP address

. Enter a unique

IP address

that is not used by any

other computer on the network connected to the Router. You can only use

an IP address in the ranges 192.168.1.2 to 192.168.1.99 and 192.168.1.151

to 192.168.1.254.

Make sure that each IP address is unique for each PC or

network device.

Click the

Gateway

tab, and in the

New Gateway

prompt, enter

192.168.1.1

which is the default IP address of the Router. Click the

Add

button to accept

the entry.

Click the

DNS

tab, and make sure the

DNS Enabled

option is selected.

Enter the

Host

and

Domain

names (e.g., John for Host and home for

Domain). Enter the

DNS entry

provided by your ISP. If your ISP has not

provided the DNS IP address, contact your ISP to get that information or go

to its website for the information.

Click the

button in the

TCP/IP properties

window, and click

the

button for the Network window.

Restart the computer when asked.

Common Problems and Solutions

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For Windows 2000:

A. Click

Start

Settings

, and

Control Panel

. Double-click

Network and

Dial-Up Connections

Right-click the

Local Area Connection

that is associated with the Ethernet

adapter you are using, and select the

Properties

option.

C. In the

Components checked are used by this connection

box, highlight

Internet Protocol (TCP/IP)

, and click the

Properties

button. Select

Use

the following IP address

option.

Enter a unique

IP address

that is not used by any other computer on the

network connected to the Router. You can only use an IP address in the

ranges 192.168.1.2 to 192.168.1.99 and 192.168.1.151 to 192.168.1.254.

Enter the Subnet Mask,

255.255.255.0

Enter the Default Gateway,

192.168.1.1

(Router’s default IP address).

G. Toward the bottom of the window, select

Use the following DNS server

addresses

, and enter the

Preferred DNS server

and

Alternative DNS

server

(provided by your ISP). Contact your ISP or go on its website to find

the information.

Click the

button in the

Internet Protocol (TCP/IP) Properties

window,

and click the

button in the

Local Area Connection Properties

window.

Restart the computer if asked.

For Windows NT 4.0:

A. Click

Start

Settings

, and

Control Panel

. Double-click the

Network

icon.

Click the

Protocol

tab, and double-click

TCP/IP Protocol

C. When the window appears, make sure you have selected the correct

Adapter

for your Ethernet adapter.

D. Select

Specify an IP address

, and enter a unique

IP address

that is not

used by any other computer on the network connected to the Router. You

can only use an IP address in the ranges 192.168.1.2 to 192.168.1.99 and

192.168.1.151 to 192.168.1.254.

Enter the Subnet Mask,

255.255.255.0

Enter the Default Gateway,

192.168.1.1

(Router’s default IP address).

Click the

DNS

tab, and enter the

Host

and

Domain

names (e.g., John for

Host and home for Domain). Under DNS Service Search Order, click the

Add

button.

Enter the

DNS IP address

in the DNS Server field, and click

the

Add

button. Repeat this action for all DNS IP addresses given by your

ISP.

Click the

button in the

TCP/IP Protocol Properties

window, and click

the

button in the

Network

window.

Restart the computer if asked.

For Windows XP:

The following instructions assume you are running Windows XP with the

default interface. If you are using the Classic interface (where the icons and

menus look like previous Windows versions), please follow the instructions for

Windows 2000.

A. Click

Start

and

Control Panel

Click the

Network and Internet Connections

icon and then the

Network

Connections

icon.

Right-click the

Local Area Connection

that is associated with the Ethernet

adapter you are using, and select the

Properties

option.

D. In the

This connection uses the following items

box, highlight

Internet

Protocol (TCP/IP)

. Click the

Properties

button.

E. Click the

use the following IP address

radio button. Enter a unique

address

that is not used by any other computer on the network connected

to the Router. You can only use an IP address in the ranges 192.168.1.2 to

192.168.1.99 and 192.168.1.151 to 192.168.1.254.

Enter the Subnet Mask,

255.255.255.0

Enter the Default Gateway,

192.168.1.1

(Router’s default IP address).

H. Toward the bottom of the window, select

Use the following DNS server

addresses

, and enter the

Preferred DNS server

and

Alternative DNS

server

(provided by your ISP). Contact your ISP or go on its website to find

the information.

Click the

button in the

Internet Protocol (TCP/IP) Properties

window.

Click the

button in the

Local Area Connection Properties

window.

I want to test my Internet connection.

Check your TCP/IP settings.

For Windows 95, 98, and Me:

•

Refer to “Appendix F: Installing the TCP/IP Protocol” and “Chapter 5:

Configure the PCs” for details. Make sure

Obtain IP address automati-

cally

is selected in the settings.

For Windows 2000:

• Click

Start

Settings

, and

Control Panel

. Double-click

Network and

Dial-Up Connections

• Right-click the

Local Area Connection

that is associated with the

Ethernet adapter you are using, and select the

Properties

option.

• In the

Components checked are used by this connection

box, highlight

Internet Protocol (TCP/IP)

, and click the

Properties

button. Make sure

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In the command prompt, type

ping 192.168.1.1

and press the

Enter

key.

• If you get a reply, the computer is communicating with the Router.

• If you do NOT get a reply, please check the cable, and make sure

Obtain

an IP address automatically

is selected in the TCP/IP settings for your

Ethernet adapter.

In the command prompt, type

ping

followed by your WAN IP address

and

press the

Enter

key.

The WAN IP Address can be found in the web inter-

face of the Router. For example, if your WAN IP address is 1.2.3.4, you

would enter

ping 1.2.3.4

and press the

Enter

key.

• If you get a reply, the computer is connected to the Router.

• If you do NOT get a reply, try the ping command from a different comput-

er to verify that your original computer is not the cause of the problem.

In the command prompt, type

ping www.yahoo.com

and press the

Enter

key.

• If you get a reply, the computer is connected to the Internet. If you cannot

open a webpage, try the ping command from a different computer to ver-

ify that your original computer is not the cause of the problem.

• If you do NOT get a reply, there may be a problem with the connection.

Try the ping command from a different computer to verify that your orig-

inal computer is not the cause of the problem.

3. I am not getting an IP address on the WAN with my Internet connection.

Refer to “Problem #2, I want to test my Internet connection” to verify that

you have connectivity.

If you need to register the MAC address of your Ethernet adapter with your

ISP, please see “Appendix G: Finding the MAC address and IP Address for

Your Ethernet Adapter.” If you need to clone the MAC address of your

Ethernet adapter onto the Router, see the MAC Address Clone section of

“Chapter 7: The Cable/DSL Firewall Router’s Web-based Utility” for

details.

Make sure you are using the right WAN settings. Contact your ISP to see if

your WAN connection type is DHCP, Static IP Address, or PPPoE (com-

monly used by DSL consumers).

Please refer to the Setup section of

“Chapter 7: The Cable/DSL Firewall Router’s Web-based Utility” for

details on WAN settings.

Make sure you have the right cable. Check to see if the WAN column has a

solidly lit Link LED.

Make sure the cable connecting from your cable or DSL modem is con-

nected to the Router’s WAN port. Verify that the Status page of the Router’s

web interface shows a valid IP address from your ISP.

that

Obtain an IP address automatically

and

Obtain DNS server

address automatically

are selected.

• Click the

button in the

Internet Protocol (TCP/IP) Properties

win-

dow, and click the

button in the Local Area Connection Properties

window.

• Restart the computer if asked.

For Windows XP:

The following instructions assume you are running Windows XP with the

default interface. If you are using the Classic interface (where the icons

and menus look like previous Windows versions), please follow the

instructions for Windows 2000.

• Click

Start

and

Control Panel

• Click the

Network and Internet Connections

icon and then the

Network Connections

icon.

• Right-click the

Local Area Connection

that is associated with the

Ethernet adapter you are using, and select the

Properties

option.

• In the

This connection uses the following items

box, highlight

Internet

Protocol (TCP/IP)

, and click the

Properties

button.

Make sure that

Obtain an IP address automatically

and

Obtain DNS server address

automatically

are selected.

• Click the

button in the

Internet Protocol (TCP/IP) Properties

win-

dow, and click the

button in the

Local Area Connection Properties

window.

• Restart the computer if asked.

For Windows NT 4.0

• Click

Start

Settings

, and

Control Panel

. Double-click the

Network

icon.

• Click the

Protocol

tab, and double-click on

TCP/IP Protocol

• When the window appears, make sure you have selected the correct

Adapter

for your Ethernet adapter and set it for

Obtain an IP address

from a DHCP server

•

Click the

button in the

TCP/IP Protocol Properties

window, and click

the

button in the

Network

window.

• Restart the computer if asked.

Open a command prompt.

• For

Windows 95, 98,

and

, please click

Start

and

Run

. In the Open

field, type in

command

. Press the

Enter

key or click the

button.

• For

Windows NT, 2000,

and

, please click

Start

and

Run

. In the Open

field, type

cmd

. Press the

Enter

key or click the

button.

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