ZyXEL Communications 2WG - Manual (Page 120)

ZyWALL 2WG Support Notes
All contents copyright (c) 2006 ZyXEL Communications Corporation.
120
The VPN high availability is design for securing VPN connection. Normally we will deploy the ZyWALL2
Plus as branch office or SOHO gateway and build up the VPN tunnel to central office. The design for IPSec HA
is based on the redundant gateway option implement on the ZyWALL2 Plus. In traditional design, the VPN
connection will be dropped once the remote gateway internet connection going down. ZyXEL already had Dual
WAN security gateway solution to prevent the failure of internet connection but for the VPN connection
transfers from primary WAN to backup WAN only support DDNS IP update before. ZyWALL2 Plus supports
redundant remote gateway to continue the VPN connection once the primary WAN connection failure. The
redundant gateway can be configured as IP format or Domain Name format, this provide the flexibility for
administrator to configure the network setting.
WAN2
How to configure the VPN HA
1. Using a web browser, login ZyWALL by giving the LAN IP address of ZyWALL in URL field.
Default LAN IP is 192.168.1.1, default password to login web configurator is 1234.
2. Go to SECURITY->VPN->Press Add button
Internet
ZyWALL 35UTM WAN1
Central Office
ZyWALL 2 Plus
Remote Office/ SOHO