ZyXEL Communications ZYWALL USG 1000 Support Notes page 116

Configure the other address object VPN_LAN_SUBNET for the VPN remote network
usage.
Modify the LAN_SUBNET address to 192.168.2.0 as used in our topology.
3) Switch to Configuration > Network > IPSec VPN > VPN Connection > VPN Gateway
to set the VPN Gateway. Here we select 'ge2' as My Address. We put 172.23.23.2 as the
Security Gateway Address and 123456789 as the Pre-Shared Key. For other parameters,
we leave them as default. There are no special settings for these parameters and the main
concern is to let the VPN peers match each other.
All contents copyright (c) 2007 ZyXEL Communications Corporation.
ZyWALL USG 1000 Support Notes
116