ZyXEL Communications ZyWALL USG Series Application Notes page 150

USG's return traffic back through the L2TP VPN tunnel.
• Set Incoming to USG.
• Set Destination Address to the L2TP address pool.
• Set the next hop to be the VPN tunnel that you are using for L2TP .
If some of the traffic from the L2TP clients needs to go to the Internet, create a policy route to send
traffic from the L2TP tunnels out through a WAN trunk.
• Set Incoming to Tunnel and select your L2TP VPN connection.
• Set the Source Address to the L2TP address pool.
• Set the Next-Hop Type to Trunk and select the appropriate WAN trunk.
3.6.3
T o configure L2TP VPN in an Android device, go to Menu > Settings > Wireless & networks >
VPN settings > Add VPN > Add L2TP/IPSec PSK VPN and configure as follows..
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