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Set Up the L2TP VPN Tunnel on the Android Mobile Device
3 To configure L2TP VPN in Android, go to Start > Settings > Network & Internet >
VPN > Add a VPN Connection and configure as follows.
4 VPN Provider set to Windows (built-in).
5 Configure Connection name for you to identify the VPN configuration.
6 Set Server name or address to be the ZyWALL/USG’s WAN IP address
(172.124.163.150 in this example).
7 Select VPN type to Layer 2 Tunneling Protocol with IPsec (L2TP/IPsec).
8 Enter User name and Password which the same as Allowed User created in
ZyWALL/USG (L2TP_Remote_Users/zyx168 in this example).