Fortinet 400 manual Connecting to the L2TP VPN, Configuring a Windows XP client for L2TP, 246

Configuring L2TP PPTP and L2TP VPN

8Add the following registry value to this key:

Value Name: ProhibitIpSec

Data Type: REG_DWORD

Value: 1

9Save your changes and restart the computer for the changes to take effect.

You must add the ProhibitIpSec registry value to each Windows 2000-based endpoint computer of an L2TP or IPSec connection to prevent the automatic filter for L2TP and IPSec traffic from being created. When the ProhibitIpSec registry value is set to 1, your Windows 2000-based computer does not create the automatic filter that uses CA authentication. Instead, it checks for a local or active directory IPSec policy.

Connecting to the L2TP VPN

1Start the dialup connection that you configured in the previous procedure.

2Enter your L2TP VPN User Name and Password.

3Select Connect.

4In the connect window, enter the User Name and Password that you use to connect to your dialup network connection.

This user name and password is not the same as your VPN user name and password.

Configuring a Windows XP client for L2TP

Use the following procedure to configure a client computer running Windows XP so that it can connect to a FortiGate L2TP VPN.

Configuring an L2TP VPN dialup connection

1Go to Start > Settings.

2Select Network and Internet Connections.

3Select Create a connection to the network of your workplace and select Next.

4Select Virtual Private Network Connection and select Next.

5Name the connection and select Next.

6If the Public Network dialog box appears, choose the appropriate initial connection and select Next.

7In the VPN Server Selection dialog, enter the IP address or host name of the FortiGate unit to connect to and select Next.

8Select Finish.

Configuring the VPN connection

1Right-click the icon that you have created.

2Select Properties > Security.

3Select Typical to configure typical settings.

4Select Require data encryption.

246 Fortinet Inc.