ZyXEL Communications 2 Plus User Manual

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Chapter 8 WAN Screens
ZyWALL 2 Plus User’s Guide
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Figure 106   Traffic Redirect WAN Setup
IP alias allows you to avoid triangle route security issues when the backup gateway is 
connected to the LAN or DMZ. Use IP alias to configure the LAN into two or three logical 
networks with the ZyWALL itself as the gateway for each LAN network. Put the protected 
LAN in one subnet (Subnet 1 in the following figure) and the backup gateway in another 
subnet (Subnet 2). Configure a LAN to LAN/ZyWALL firewall rule that forwards packets 
from the protected LAN (Subnet 1) to the backup gateway (Subnet 2). 
Figure 107   Traffic Redirect LAN Setup
8.9  Configuring Traffic Redirect
To change your ZyWALL’s traffic redirect settings, click NETWORK > WAN > Traffic 
Redirect
. The screen appears as shown.
Figure 108   NETWORK > WAN > Traffic Redirect