Traffic Redirect; Figure 9-9 Traffic Redirect Wan Setup - ZyXEL Communications ZyWall 100 User Manual

ZyWALL 100 Internet Security Gateway
9.5

Traffic Redirect

Traffic redirect forwards WAN traffic to a backup gateway when the ZyWALL cannot connect to the
Internet through its normal gateway, thus acting as an auxiliary backup when your regular WAN connection
fails. You can connect the backup gateway on the WAN so that the ZyWALL still provides firewall
protection. It is easy to use this solution the ZyWALL has a static WAN IP address.

Figure 9-9 Traffic Redirect WAN Setup

When the ZyWALL has a dynamic WAN IP address, it may be easier to connect the backup gateway to the
LAN (or DMZ). You can still have the ZyWALL apply the firewall to incoming traffic when the backup
gateway is on the LAN. Use IP alias to configure the LAN into two or three logical networks (based on
subnets) with the ZyWALL itself as the gateway for each LAN network. Put 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).
Remote Node Setup 9-13