Chrome OS (on Chromebooks) and CloudReady (x86 PC) have native support for L2TP/IPsec VPN. To setup a L2TP/IPsec VPN connection, do the following:
Settingsin lower-right menu
+Add Connection > OpenVPN / L2TP
Server hostname: the server address/location you want to connect to, from the list at https://vpn.ac/status such as
nl3.vpn.ac (use the alternative addresses for users in China if you connect from China).
Service name: a short description, such as
VPN.AC L2TP NL
L2TP/IPsec + pre-shared key
Pre-shared key: vpnacshared#
Server CA certificate: Default
User certificate: None installed
Username: your VPN username
Password: your VPN password
Group name: leave blank
Save identity and password if you want to save your credentials and click
You can find the connection in the menu for quick connect/disconnect.