Traffic Redirect; Configuring Traffic Redirect; Figure 45 Traffic Redirect Wan Setup; Figure 46 Traffic Redirect Lan Setup - ZyXEL Communications ZyWALL 2Plus User Manual

ZyWALL 2 Plus User's Guide

7.8 Traffic Redirect

Traffic redirect forwards WAN traffic to a backup gateway when the ZyWALL cannot connect
to the Internet through its normal gateway. Connect the backup gateway on the WAN so that
the ZyWALL still provides firewall protection. In the following figure, your ZyWALL is
labeled A, the gateway is labeled B and the backup gateway is labeled C.

Figure 45 Traffic Redirect WAN Setup

The following network topology allows you to avoid triangle route security issues (see
8.13 on page
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). In the following figure, your ZyWALL is labeled A, the gateway is labeled B and
the backup gateway is labeled C.

Figure 46 Traffic Redirect LAN Setup

7.9 Configuring Traffic Redirect

To change your ZyWALL's traffic redirect settings, click NETWORK > WAN > Traffic
Redirect. The screen appears as shown.
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149) when the backup gateway is connected to the LAN. Use IP alias to
Section
Chapter 7 WAN Screens