Trendnet TW100-BRV204 User Manual

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Internet Features 
49 
Virtual Servers 
This feature allows you to make Servers on your LAN accessible to Internet users. Normally, 
Internet users would not be able to access a server on your LAN because: 
•  Your Server does not have a valid external IP Address. 
•  Attempts to connect to devices on your LAN are blocked by the firewall in this device. 
The "Virtual Server" feature solves these problems and allows Internet users to connect to your 
servers, as illustrated below. 
 
Figure 31: Virtual Servers 
IP Address seen by Internet Users 
Note that, in this illustration, both Internet users are connecting to the same IP Address, but 
using different protocols. 
To Internet users, all virtual Servers on your LAN have the same IP Address. 
This IP Address is allocated by your ISP. 
This address should be static, rather than dynamic, to make it easier for Internet users to 
connect to your Servers. 
However, you can use the DDNS (Dynamic DNS) feature to allow users to connect to your 
Virtual Servers using a URL, instead of an IP Address.