Draytek Vigor2920 Series User Manual page 152

DMZ Host for WAN2 and WAN3 is slightly different with WAN1.
See the following figure.
If you previously have set up WAN Alias for PPPoE or Static or Dynamic IP mode in
WAN2 interface, you will find them in Aux. WAN IP for your selection.
Available settings are explained as follows:
Item
Enable
Private IP
Vigor2920 Series User's Guide
When you have selected one private IP from the above dialog,
the IP address will be shown on the screen. Click OK to save
the setting.
Description
Check to enable the DMZ Host function.
Enter the private IP address of the DMZ host, or click Choose
PC to select one.
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