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Using the Windows8 OS for Access
This section describes how mobile users use the built-in L2TP VPN function of the Windows8 OS to access the intranet.
Procedure
- Modify the registry.
In the Windows system, an IPSec policy is automatically created for an L2TP VPN connection. Certificate authentication is used in the IPSec policy. If the local device does not have an appropriate certificate, the L2TP VPN tunnel fails to be established.
This section describes how to establish an L2TP VPN tunnel without an IPSec policy. Therefore, the related registry needs to be modified to disable the automatically created IPSec policy.
- Right-click Start and select Run. Run the regedit command to open the registry.
- Access the HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\RasMan\Parameters path on the left, right-click the blank area on the right, and choose New > DWORD (32-bit) Value from the shortcut menu to generate the NewValue #1 file.
- Select NewValue #1 and rename it to ProhibitIpSec.
- Select ProhibitIpSec, right-click it, and choose Modify from the shortcut menu.
- Set Value data to 1 and set Base to Hexadecimal.
- Restart the PC to make the configurations take effect.
- Create an L2TP VPN connection.
Right-click the network icon in the taskbar and choose Open Network and Sharing Center.
Click Set up a new connection or network to create a new network connection.
- Select Connect to workplace and click Next.
- Select Use my Internet connection (VPN) and connect to the enterprise intranet over the Internet using a VPN connection.
- Click I'll setup an Internet connection later.
- Enter Internet address, namely, the IP address of the interface used by the LNS to establish a VPN tunnel, enter the connection name, and click Create.
- In Network and Sharing Center, click Change adapter settings, right-click the newly created connection, and choose Properties.
- Right-click the new connection and choose Properties.
- Click the Security tab and set the parameters as shown in the following figure. Click OK after you complete the setting.
- Select the created VPN connection and click Connect.
- Input the username and password, and click OK.
