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ADSL Router User Manual 
 
94 
Virtual Server – DMZ Host 
In computer networks, a DMZ (demilitarized zone) is a computer host or small 
network inserted as a "neutral zone" between a company's private network and the 
outside public network. It prevents outside users from getting direct access to a 
server that has company data. A DMZ is an optional and more secure approach to a 
firewall and effectively acts as a proxy server as well. 
To close the function of DMZ Host, 
please click Discarded.  
To activate a DMZ host, please click 
Forwarded to the DMZ host radio 
button, and enter the IP Address of 
DMZ host.   
Click Apply
Once this feature is enabled, you must specify an IP address. It allows unrestricted 
2-way communication between the specified IP address and other Internet users or 
Servers. 
… 
This allows almost any application to be used on the specified IP address. 
… 
The specified IP address will receive all “Unknown” connections and data. 
… 
The DMZ feature only works when the NAT function is enabled. 
Virtual Server – Dynamic DNS 
The Dynamic DNS (Domain Name System) combines both functions of DNS and 
DHCP to map a dynamic IP to a fixed domain name. This page allows you to access 
the virtual servers with a domain name and password. 
Dynamic DNS
: 
 
Select Enable to enable DDNS; select 
Disabled to disable this function. 
Dynamic DNS Provider:   
Choose a provider (DynDNS.org, 
TZO.com, ChangeIP.com, or 
No-IP.com) from the drop-down list. 
Internet Connection
: 
 
Select the interface from the 
drop-down list that you want to use for 
connecting the Internet.   
User Name / Password
: 
Enter the user name and password 
that you registered with the provider. 
HostName.DomainName
: 
 
Key in the domain name or host name 
that you registered. You can use 
letters and dash for naming, yet other 
characters are not allowed to use for 
preventing from making troubles. 
Status
:   
It displays current status. 
When the setting is finished, click 
Apply to invoke them, or click Cancel 
if you want to discard the settings.