Debian/Ubuntu KVM/Xen Auto Install L2TP/IPsec VPN server

Notice:
This installation can't apply for openvz.

Debian (Jessie or Wheezy) & Ubuntu 12.04-16.04
1.(sudo) apt-get update && apt-get upgrade
2.wget https://git.io/vpnsetup -O vpnsetup.sh
nano -w vpnsetup.sh [Replace with your own values: IPSEC_PSK, VPN_USER and VPN_PASSWORD]
sudo sh vpnsetup.sh
 3.Using your iphone/desktop/Android connect VPN.