ZyXEL Communications ZyWALL USG 200 Series User Manual page 203

12 Click IPSec Settings.
Figure 185 L2TP to ZyWALL Properties > Security
13 Select the Use pre-shared key for authentication check box and enter the pre-
shared key used in the VPN gateway configuration that the ZyWALL is using for
L2TP VPN. Click OK.
Figure 186 L2TP to ZyWALL Properties > Security > IPSec Settings
ZyWALL USG 100/200 Series User's Guide
Chapter 8 L2TP VPN Example
203