Linksys AG241 How to Establish a Secure IPSec Tunnel, Create an IPSec Policy, Build Filter Lists

ADSL2 Gateway with 4-Port Switch

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 as shown in Figure C-1.

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 Next button, and then enter a name for your policy (for example, to_Router). Then, click Next.

4.Deselect the Activate the default response rule check box, and then click the Next button.

5.Click the Finish button, making sure the Edit check box is checked.

Figure B-1: Local Security Screen

NOTE: The references in this section to “win” are references to Windows 2000 and XP. Substitute the references to “Router” with “Gateway”. Also, the text on your screen may differ from the text in your instructions for “OK or Close”; click the appropriate button on your screen.

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, as shown in Figure C-2. 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. (See Figure C-3.)The IP Filter List screen should appear, as shown in Figure C-4. 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.

Appendix B: Configuring IPSec between a Windows 2000 or XP Computer and the Gateway

Figure B-2: Rules Tab

Figure B-3: IP Filter List Tab

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How to Establish a Secure IPSec Tunnel