Windows Vista: L2TP/IPSec PSK VPN Setup
- Click Start -> Connect to
- In the Connect to a network window, click Set up a connection or network
- In the next window, select Connect to a workplace and click Next
- In the next window, click on Use my Internet connection (VPN)
- In the Internet address: field, type your supplied server (for example:1.gfwvpn.com)
- In the Destination name: field, type gfwvpnl2tp
- Select "Don't connect now; just set it up so I can connect later"
- After double checking the fields, click Next
- In the User name: field, enter your supplied username
- In the Password: field, enter your supplied password
- Some users may select Remember this password
- Click Create button
- Click the "Close" button to return to the "Network and Internet" screen
- Click the "Connect to a network" link in the "Network and Sharing Center", and you should see the gfwvpnl2tp connection
- Right-click on the gfwvpnl2tp connection, and choose Properties from the menu
- Select Networking tab, and select Layer 2 Tunneling Protocol with IPsec (L2TP/IPSec) in Type of VPN: list
- Click on IPsec Settings... button
- select "Use preshared key for authentication", and type gfwvpn into the Key: text box, and click "OK"
- Click OK button to save the settings, and all the setting is done

Windows 7: L2TP/IPSec PSK VPN Setup
- Click Start -> Control Panel
- In the Control Panel, click View network status and tasks under Network and Internet
- Under Change your networking settings, click Set up a new connection or network
- In the Set Up a Connection or Network window, select Connect to a workplace and click Next
- In the Connect to a Workplace window, click on Use my Internet connection (VPN)
- In the Internet address: field, type your supplied server (for example:1.gfwvpn.com)
- In the Destination name: field, type gfwvpnl2tp
- Select "Don't connect now; just set it up so I can connect later"
- After double checking the fields, click Next
- In the User name: field, enter your supplied username
- In the Password: field, enter your supplied password
- Some users may select Remember this password
- Click Create
- Click the "Close" button to return to the "Network and Internet" screen
- Click the "Connect to a network" link in the "Network and Sharing Center", and you should see the gfwvpnl2tp connection
- Right-click on the gfwvpnl2tp connection, and choose Properties from the menu
- Select Networking tab, and select Layer 2 Tunneling Protocol with IPsec (L2TP/IPSec) in Type of VPN: list
- Click on Advanced setting button
- select "Use preshared key for authentication", and type gfwvpn into the Key: text box, and click "OK"
- Click OK button to save the settings, and all the setting is done

Mac OS X 10.4: L2TP/IPSec PSK VPN Setup
- Go to Applications and open Internet Connect
- In the Internet Connect application, click File -> New VPN Connection
- In the next prompt, select L2TP over IPSec and click Continue
- In the VPN (L2TP) window, Click the Configuration: 'Other' popup menu, then select 'Edit Configurations…'
- In the Description: field, enter gfwvpnl2tp
- In the Server address: field, enter your supplied server (for example:1.gfwvpn.com)
- In the Account Name: field, enter your supplied username
- In the Password: field, enter your supplied password
- In the Shared Secret: field, enter gfwvpn
- Click Ok
- Some users may select Show VPN status in menu bar
- Click Connect

Mac OS X 10.5+: L2TP/IPSec PSK VPN Setup
- Click the Apple Menu in the upper left corner
- Click on System Preferences
- In the System Preferences window, click Network
- In the Network window, click the Lock and enter your password.
- Click + to add a new connection.
- In the following prompt, for Interface: select VPN
- In the VPN Type:, select L2TP over IPSec
- In the Service Name: field, enter gfwvpnl2tp
- Click Create
- In the Server Address: field, enter your supplied server (for example:1.gfwvpn.com)
- In the Account Name: field, enter your supplied username
- Click Authentication Settings
- In the Password: field, enter your supplied password
- In the Shared Secret: field, enter gfwvpn
- Click Ok
- Click the Advanced button
- Make sure to select Send all traffic over VPN connection
- Click Connect

iPhone / iTouch / iPad: L2TP/IPSec PSK VPN Setup
- Open the Settings application
- Click on General
- Click on Network
- Click on VPN
- Click on Add VPN Configuration
- Select L2TP
- In the Description field, enter gfwvpnl2tp
- In the Server field, enter your supplied server (for example:1.gfwvpn.com)
- In the Account field, enter your supplied username
- In the Password field, enter your supplied password
- In the Secret field, enter gfwvpn
- Ensure that Send All Traffic is set to ON
- Click Save

- Press the Home button
- Open the Settings application
- Click on VPN
- Click on gfwvpnl2tp
- Set VPN to ON

Android: L2TP/IPSec PSK VPN Setup
- Open Settings and click on Wireless Controls
- Click on VPN Settings
- Click on Add VPN
- Choose L2TP/IPSec PSK VPN
- In the VPN Name field, enter gfwvpnl2tp
- In the Set VPN Server field, enter your supplied server (for example:1.gfwvpn.com)
- Set IPSec pre-shared key to gfwvpn
- Do not enable L2TP secret.
- Click Save
- Open Settings and click on Wireless Controls
- Click on gfwvpnl2tp
- In the Username: field, enter your supplied username
- In the Password: field, enter your supplied password
- Some users may select Remember username
- Click Connect