Address: http://hi.baidu.com/quest2run/blog/item/4c69e71df18ea90540341739.html
Click "VPN connection" on the NIC to configure the VPN
Add, select "Point-to-Point Tunneling Protocol (PPTP)", and create
Connection name: casual
Automatic Connection: select
Gateway: VPN Server domain name or IP address
User name: User Name
Password: Password
NT domain: not filled
Note: Do not select available for all users. Otherwise, the connection fails.
Then click "advanced... "
Remove the check box before EAP
Select use point-to-point encryption (MPPE)
Other Default values
Note: If the connection fails, check allow stateful encryption and send ppp echo packets.
IPv4 configuration: UNCHANGED
Connect to VPN: Click the NIC icon and select the VPN connection you Just configured. If the network adapter is successful, there will be a small lock icon in the lower right corner.
If it fails, disable the network first and then enable it.