Huawei DR814Q Benutzerhandbuch

User Manual 
Aolynk DR814Q ADSL2+ Broadband Router 

5  Advanced Configuration

 

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When NAT (network address translation) is enabled on an internal network device, 

access to it from the Internet will be forbidden. In this case, a virtual server is needed if 

you want to provide public services (Web services, E-mail, FTP, for example) to outside. 

Although the internal address is still inaccessible for external users, the DR814Q can 

identify service requests and forward them to the virtual server. 

Table 5-2 Description of virtual server setting items 

Internal Address 

Type in the IP address of the internal PC that will provide the 
application service. 

Protocol 

Select the protocol of the application service. 

External Port 
Range 

Type in the range of ports that the application provides for 
access from outside. 

Internal Port Range  Type in the range of ports that the application actually uses. 

 

After the configuration, click <Add>. The virtual server is added to the virtual server list. 

You can click <Delete> to delete the corresponding virtual server. 

Example: To configure the PC with the address 192.168.1.100 as a virtual server to 

provide an FTP service for the outside (with the port number 21), refer to the 

configuration in Figure 5-6. Thus, all FTP requests from the Internet users will be 

forwarded to the PC (server) with the fixed IP address 192.168.1.100. 

 

The values for [Internal Port Range] and [External Port Range] should be set as the 

same, or the configuration will fail. 

 

The Demilitarized Zones (DMZ) host is actually a default virtual server. When the 

DR814Q receives a connection request from the external network, it first searches the 

virtual service list for a matching item. If a corresponding item is found, the DR814Q 

forwards the request message to the corresponding virtual server. Otherwise, it 

forwards the message to the DMZ host. 

Type the IP address of the PC to be used as the DMZ host in the [DMZ Host IP Address] 

field.