Linksys RVS4000 Router Manual PDF (Setup & Configuration Guide)

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62

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

How to Establish a Secure IPSec Tunnel

4-Port Gigabit Security Router with VPN

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 C-1: Local Security Screen

Figure C-2: Rules Tab

Figure C-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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63

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

How to Establish a Secure IPSec Tunnel

4-Port Gigabit Security Router with VPN

3.

The

IP Filter List

screen should appear. Enter an appropriate name, such as win->Router, for the filter list, and

de-select the

Use Add

Wizard

check box. Then, click the

Add

button.

4.

The

Filters Properties

screen will appear. Select the

Addressing

tab. In the

Source address

field, select

My IP

Address

. In the

Destination address

field, select

A specific IP Subnet

, and fill in the IP Address: 192.168.1.0

and Subnet mask: 255.255.255.0. (These are the Router’s default settings. If you have changed these

settings, enter your new values.)

5.

If you want to enter a description for your filter, click the

Description

tab and enter the description there.

6.

Click the

OK

button. Then, click the

OK

or

Close

button on the

IP Filter List

window.

Figure C-4: IP Filter LIst

Figure C-5: Filters Properties

Figure C-6: New Rule Properties

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64

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

How to Establish a Secure IPSec Tunnel

4-Port Gigabit Security Router with VPN

Filter List 2: Router ->win

7.

The

New Rule Properties

screen will appear. Select the

IP Filter List

tab, and make sure that

win -> Router

is highlighted. Then, click the

Add

button.

8.

The

IP Filter List

screen should appear. Enter an appropriate name, such as Router->win for the filter list, and

de-select the

Use

Add Wizard

check box. Click the

Add

button.

9.

The

Filters Properties

screen will appear. Select the

Addressing

tab. In the

Source address

field, select

A

specific IP Subnet

, and enter the IP Address: 192.168.1.0 and Subnet mask: 255.255.255.0. (Enter your new

values if you have changed the default settings.) In the

Destination address

field, select

My IP Address

.

10. If you want to enter a description for your filter, click the

Description

tab and enter the description there.

11. Click the

OK

or

Close

button and the

New Rule Properties

screen should appear with the IP Filer List tab

selected. There should now be a listing for “Router -> win” and “win -> Router”. Click the

OK

(for WinXP) or

Close

(for Win2000) button on the

IP Filter List

window.

Figure C-7: IP Filter List

Figure C-8: Filters Properties

Figure C-9: New Rule Properties

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65

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

How to Establish a Secure IPSec Tunnel

4-Port Gigabit Security Router with VPN

Step 3: Configure Individual Tunnel Rules

Tunnel 1: win->Router

1.

From the

IP Filter List

tab, click the filter list win->Router.

2.

Click the

Filter Action

tab, and click the filter action

Require Security

radio button. Then, click the

Edit

button.

3.

From the

Security Methods

tab, verify that the

Negotiate security

option is enabled, and deselect the

Accept

unsecured communication, but always respond using IPSec

check box. Select

Session key Perfect

Forward Secrecy

, and click the

OK

button.

Figure C-12: Security Methods Tab

Figure C-10: IP Filter List Tab

Figure C-11: Filter Action Tab

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66

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

How to Establish a Secure IPSec Tunnel

4-Port Gigabit Security Router with VPN

4.

Select the

Authentication Methods

tab, and click the

Edit

button.

5.

Change the authentication method to

Use this string to protect the key exchange (preshared key)

, and

enter the preshared key string, such as XYZ12345. Click the

OK

button.

6.

This new Preshared key will be displayed. Click the

Apply

button to continue, if it appears on your screen;

otherwise, proceed to the next step.

Figure C-13: Authentication Methods

Figure C-14: Preshared Key

Figure C-15: New Preshared Key

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