Linksys WRV54Gv2.36 Router Manual PDF (Setup & Configuration Guide)

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96

Appendix B: Wireless Security

Security Threats Facing Wireless Networks

Wireless-G VPN Broadband Router

WPA Pre-Shared Key

. If you do not have a RADIUS server, select the type of algorithm, TKIP or AES, enter a

password in the Pre-Shared key field of 8-64 characters, and enter a Group Key Renewal period time between

0 and 99,999 seconds, which instructs the Router or other device how often it should change the encryption

keys.

WPA RADIUS

. WPA used in coordination with a RADIUS server. (This should only be used when a RADIUS

server is connected to the Router or other device.) First, select the type of WPA algorithm,

TKIP

or

AES

. Enter

the RADIUS server’s IP Address and port number, along with a key shared between the device and the server.

Last, enter a Group Key Renewal period, which instructs the device how often it should change the encryption

keys.

RADIUS

. WEP used in coordination with a RADIUS server. (This should only be used when a RADIUS server is

connected to the Router or other device.) First, enter the RADIUS server’s IP Address and port number, along

with a key shared between the device and the server. Then, select a WEP key and a level of WEP encryption,

and either generate a WEP key through the Passphrase or enter the WEP key manually.

Implementing encryption may have a negative impact on your network’s performance, but if you are transmitting

sensitive data over your network, encryption should be used.

These security recommendations should help keep your mind at ease while you are enjoying the most flexible

and convenient technology Linksys has to offer.

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97

Wireless-G VPN Broadband Router

Appendix C: Using the Linksys QuickVPN Software for Windows 2000 or XP

Overview

Appendix C: Using the Linksys QuickVPN Software for

Windows 2000 or XP

Overview

The Linksys Wireless-G VPN Broadband Router offers a free QuickVPN software program for computers running

Windows 2000 or XP. (Computers running other operating systems will have to use a third-party VPN software

program.) This guide describes how to install and use the Linksys QuickVPN software.

Before You Begin

The QuickVPN software program only works with a Wireless-G VPN Broadband Router that meets these two

criteria: 1) it is running firmware version 2.36 or higher, and 2) it MUST be properly configured to accept a

QuickVPN connection. If you need to upgrade the Router’s firmware or configure it for a QuickVPN connection,

refer to “Appendix H: Upgrading Firmware.”

After you have verified that the Router is ready for a QuickVPN connection, make sure you have the necessary

information: user name, password, and server address for your QuickVPN connection. If you do not have this

information, contact your system administrator.

Installing the LInksys QuickVPN Software

1.

Go to

www.linksys.com

and select

Products

.

2.

Click

Business Solutions

.

3.

Click

Router/VPN Solutions

.

vpn

(virtual private network): a security

measure to protect data as it leaves one

network and goes to another over the Internet.

software

: instructions for the computer.

Figure C-1: Setup Wizard - Welcome Screen

NOTE:

If you have the Wireless-G VPN Broadband Router Setup CD-ROM available, then follow

these instructions:

1.

Insert the Setup CD-ROM into your CD-ROM drive. The Setup Wizard should run automatically,

and the

Welcome

screen should appear. If it does not, click

Start

and then

Run

. In the field

provided, enter

D:\setup.exe

(if “D” is the letter of your CD-ROM drive).

2.

Click

Install QuickVPN Software

. Then follow the on-screen instructions.

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98

Wireless-G VPN Broadband Router

Appendix C: Using the Linksys QuickVPN Software for Windows 2000 or XP

Using the Linksys QuickVPN Software

4.

Click

WRV54G

.

5.

Click

Linksys QuickVPN Utility

in the More Information section.

6.

Save the zip file to your PC, and extract the .exe file.

7.

Double-click the .exe file, and follow the on-screen instructions. Then proceed to the next section, “Using the

Linksys QuickVPN Software.”

Using the Linksys QuickVPN Software

1.

Double-click the Linksys QuickVPN software icon on your desktop or in the system tray.

2.

The login screen will appear. Enter a name for your profile.

Then enter the User Name and Password you have been assigned.

In the

Server Address

field, enter the IP address or domain name of the Wireless-G VPN Broadband Router.

3.

To begin your QuickVPN connection, click the

Connect

button. To save this profile, click the

Save

button. To

delete this profile, click the

Delete

button. For information, click the

Help

button.

4.

When your QuickVPN connection is active, the status screen will appear, and the QuickVPN tray icon will turn

green. It will display the IP address of the remote end of the VPN tunnel, the time and date the VPN tunnel

began, and the total length of time the VPN tunnel has been active.

To terminate the VPN tunnel, click the

Disconnect

button. If you want to change your password, click the

Change Password

button. For information, click the

Help

button.

5.

If you clicked the Change Password button and have permission to change your own password, you will see

the

Connect Virtual Private Connection

screen. Enter your password in the

Old Password

field. Enter your new

password in the

New Password

field. Then enter the new password again in the

Confirm New Password

field.

Click the

OK

button to save your new password. Click the

Cancel

button to cancel your change. For

information, click the

Help

button.

6.

You can create multiple profiles by repeating steps 2 and 3 for each profile.

Figure C-4: QuickVPN Software - Profile

NOTE:

You can change your password only if you have been granted that privilege by your system

administrator.

Figure C-6: QuickVPN Tray Icon - Connection Available

Figure C-7: QuickVPN Software - Change Password

Figure C-5: QuickVPN Software - Status

Figure C-3: QuickVPN Tray

Icon - No Connection

Figure C-2: QuickVPN

Desktop Icon

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99

Appendix D: Configuring IPSec between a Windows 2000 or XP Computer and the Router

Introduction

Wireless-G VPN Broadband Router

Appendix D: Configuring IPSec between a Windows 2000 or

XP Computer and the Router

Introduction

This document demonstrates how to establish a secure IPSec tunnel using preshared keys to join a private

network inside the Router and a Windows 2000 or XP computer. You can find detailed information on configuring

the Windows 2000 server at the Microsoft website:

Microsoft KB Q252735 - How to Configure IPSec Tunneling in Windows 2000

http://support.microsoft.com/support/kb/articles/Q252/7/35.asp

Microsoft KB Q257225 - Basic IPSec Troubleshooting in Windows 2000

http://support.microsoft.com/support/kb/articles/Q257/2/25.asp

Environment

The IP addresses and other specifics mentioned in this appendix are for illustration purposes only.

Windows 2000 or Windows XP

IP Address: 140.111.1.2 <= User ISP provides IP Address; this is only an example.

Subnet Mask: 255.255.255.0

WRV54G

WAN IP Address: 140.111.1.1 <= User ISP provides IP Address; this is only an example.

Subnet Mask: 255.255.255.0

LAN IP Address: 192.168.1.1

Subnet Mask: 255.255.255.0

NOTE:

Keep a record of any changes you make.

Those changes will be identical in the Windows

“secpol” application and the Router’s Web-based

Utility.

NOTE:

The text on your screen may differ from

the text in your instructions regarding the

OK

or

Close

buttons; click the appropriate button on

your screen.

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100

Appendix D: Configuring IPSec between a Windows 2000 or XP Computer and the Router

How to Establish a Secure IPSec Tunnel

Wireless-G VPN Broadband Router

How to Establish a Secure IPSec Tunnel

Step 1: Create an IPSec Policy

1.

Click the

Start

button, select

Run

, and type

secpol.msc

in the

Open

field.

The

Local Security Setting

screen

will appear.

2.

Right-click

IP Security Policies on Local Computer

(Win XP) or

IP Security Policies on Local Machine

(Win 2000), and click

Create IP Security Policy

.

3.

Click the

4.

Deselect the

Activate the default response rule

check box, and then click the

5.

Click the

Finish

button, making sure the

Edit

check box is checked.

Step 2: Build Filter Lists

Filter List 1: win->Router

1.

In the new policy’s properties screen, verify that the

Rules

tab is selected. Deselect the

Use Add Wizard

check box, and click the

Add

button to create a new rule.

2.

Make sure the

IP Filter List

tab is selected, and click the

Add

button.

NOTE:

The references in this section to “win” are

references to Windows 2000 and XP.

Figure D-1: Local Security Screen

Figure D-2: Rules Tab

Figure D-3: IP Filter List Tab

NOTE:

The text on your screen may differ from

the text in your instructions regarding the

OK

or

Close

buttons; click the appropriate button on

your screen.

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