How to Create and Configure L2TP Connection in Windows 2000, 2003, XP Machine

From the Start menu, select Settings, select Network and Dial-up Connections, and then click Make New Connection.

For Windows XP, goto Control Panel and select Network Connections. Then click Create a new connection.

From the Network Connection Wizard, click Next.

From Network Connection Type, click to select Connect to a private network through the Internet, and then click Next.

For Windows XP, choose Connect to the network at my workplace. Then select Virtual Private Network connection.

You may see the Public Network screen at this time. Click to select the dial-up connection that connects you to your ISP. If your physical connection is an Ethernet connection, select Do not dial initial connection. If the physical connection is through an ISP, select Automatically dial this initial connection. Click Next.

For Windows XP, you will be prompted first for a connection name first.

For this example, we used Do not dial the initial connection.

From Destination Address, in the Host name or IP address box, enter the IP address or hostname of your Juniper Firewall's Untrust interface, and then click Next.

For this example, we have used 1.1.1.1 as the Untrust IP address.

From Connection Availability, click to select For all users, and then click Next.

From the Completing the Network Connection Wizard, enter a connection name, and then click Finish.

For Windows XP, the connection name was entered before step 4.

Click Properties.

Click to select the Security tab, click to select Advanced (custom settings), and then click Settings.

From Advanced Security Settings, from the Data encryption drop-down menu, click to select Optional encryption (connect even if no encryption).

From Logon security, click to select Allow these protocols. Click to select only Unencrypted password (PAP) and Challenge Handshake Authentication Protocol (CHAP). Click to clear any protocols that do not apply.

Click OK.

Click to select the Networking tab. From the Type of VPN server I am calling drop-down menu, click to select Layer-2 Tunneling Protocol (L2TP).

For Windows XP, select L2TP IPSec VPN.

Click OK.

From Network and Dial-up Connections, double-click the Dial-up Connection.

Enter your User name and Password.

The User name and Password matches the username and password of the L2TP user configured on the Firewall.

Click Connect.