How To Use Device Ha; Figure 113 Firewall > Add; Figure 114 Object > Address > Add; Figure 115 Firewall > Wan To Lan > Add - ZyXEL Communications ZyWALL USG 100 Series User Manual

Chapter 6 Tutorials
Figure 113 Firewall > Add
4 Configure an address object for the ZyWALL's 10.0.0.8 WAN IP address as follows and
click OK.
Figure 114 Object > Address > Add
5 Configure the screen as follows and click OK.
Figure 115 Firewall > WAN to LAN > Add
Now people can call the H.323 device through the Internet.

6.9 How to Use Device HA

Here is an example of using device HA (High Availability) to backup ZyWALL A (the master)
with ZyWALL B. ZyWALL B automatically takes over all of A's functions if A fails or loses
its lan1 or wan1 connection.
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ZyWALL USG 100/200 Series User's Guide