ZyXEL Communications ZyWall USG 2000 User Manual page 191

12 Click IPSec Settings.
Figure 169 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 170 L2TP to ZyWALL Properties > Security > IPSec Settings
ZyWALL USG 2000 User's Guide
Chapter 8 L2TP VPN Example
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