ZyXEL Communications ZYWALL 1050 Support Notes page 135

ZyWALL 1050/ZyWALL USG 300 Support Notes
Note: The purpose of this policy route is to direct the traffic from 192.168.3.0 which is sent
through the secondary VPN path to be redirected to 192.168.31.0 network and returned
through the original path.
For example, think about when primary VPN tunnel is down, the traffic would go from PC
ZyWALL 2 Plus ZyWALL -B (change source IP to 192.168.31.0) ES-4024A to FTP
server (now the packet is with source 192.168.31.0 to destination 192.168.1.33).
The FTP server's gateway is ZyWALL -A's ge2 applied via DHCP or manually configured. So
when traffic would return, it will be flowed from FTP server ZyWALL -A's ge2 (which will
redirect the traffic to another host ) 192.168.1.254 (which is ES-4024A's VLAN3
route-domain IP address) ZyWALL1050-B ZyWALL 2 Plus to the PC behind
ZyWALL 2 Plus.
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