Draytek Telnet Command 1.11 - Manual (Page 30)

Telnet Command Reference Guide V1.1 24
2.4.17 ip dmzswitch (for 2700 series)
This command allows users to set DMZ mode.
ip dmzswitch off
ip dmzswitch private
ip dmzswitch active_trueip
Syntax Description
off It means to turn off DMZ function.
private It means to set DMZ as private IP.
active_truei It means to set the DMZ as active true IP DMZ.
Example
>ip dmzswitch off