Sapido BRC70x User Manual page 35

Item
Enable DMZ
DMZ Host IP Address
4.9 DDNS
You can assign a fixed host and domain name to a dynamic Internet IP address. Each time
the router boots up, it will re-register its domain-name-to-IP-address mapping with the DDNS
service provider. This is the way Internet users can access the router through a domain
name instead of its IP address.
Note: make sure that you have registered with a DDNS service provider before enabling this feature.
http://www.sapido.com.tw/
Description
It will enable the DMZ service if you select it.
Please enter the specific IP address for DMZ host.
User Manual v1.0.0