ZyXEL Communications ZYWALL USG 1000 Support Notes page 125

ZyWALL USG 1000 Support Notes
Here, we simulate the topology as on the following picture. It shows a simple use of ZyWALL
2 Plus which supports VPN HA and Dial Backup functions. When the primary WAN access to
the VPN tunnel is down, ZyWALL USG will trigger the dialup backup and establish a VPN
tunnel with second secure gateway of another ZyWALL USG located at the branch office.
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