93/255
Go to CONFIGURATION > Interface > Trunk > Configuration. Select Disconnect
Connection before Falling Back. In the Default WAN Trunk, select User Configured
Trunk to be the customized WAN trunk added in the previous step
(Multi_WAN_Failover in this example).
Figure 151 CONFIGURATION > Interface > Trunk > User Configuration > Add
Set up the Failover Command Line (ZyWALL/USG HQ)
Go to CONFIGURATION > Security Policy > Policy Control and add a To ZyWALL
rule to allow SSH service.