ZyXEL Communications 1000 Manuel D’Utilisation

Chapter 31 L2TP VPN

ZyWALL USG 1000 User’s Guide

• Use transport mode.
• Not be a manual key VPN connection. 
• Use Pre-Shared Key authentication.
• Use a VPN gateway with the Secure Gateway set to 0.0.0.0 if you need to 

allow L2TP VPN clients to connect from more than one IP address.

Default_L2TP_VPN_Connection is pre-configured to be convenient to use for 
L2TP VPN. If you use it, edit the following.

Configure the local and remote policies as follows.

• For  the  Local Policy, create an address object that uses host type and contains 

the My Address IP address that you configured in the 

Default_L2TP_VPN_GW. Use this address object in the local policy.

• For  the  Remote Policy, create an address object that uses host type and an IP 

address of 0.0.0.0. Use this address object in the remote policy.

You must also edit the Default_L2TP_VPN_GW gateway entry.

• Configure the My Address setting according to your requirements.
• Replace the default Pre-Shared Key.

You must configure a policy route to let remote users access resources on a 
network behind the ZyWALL. 

• Set the policy route’s Source Address to the address object that you want to 

allow the remote users to access (LAN_SUBNET in the following figure). 

• Set  the  Destination Address to the IP address pool that the ZyWALL assigns 

to the remote users (L2TP_POOL in the following figure).

• Set the next hop to be the VPN tunnel that you are using for L2TP.

Figure 380   Policy Route for L2TP VPN