ChromeBook L2TP VPN Setup guide
Right-click on the clock and choose “ Settings “
Click on Add Connection and then choose “ Add Private Network “
In the pop-up windows, enter the below details :
Click on Connect and you will be connected to VPN.
a) If the connection does not work, first please make sure you are using a regular, standard VPN server.
b) If that does not connect, try changing the connection proxy settings. Try both “Direct Internet connection” and “Automatic proxy configuration”