Specifications

Chapter 3 Configuring Compex NetPassage 16A
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3.3.1 Introduction to Virtual Servers
Compex NetPassage 16A supports two types of Virtual Server, one based on
Port Forwarding and the other based on IP Forwarding, where IP Forwarding
option is only available when the WAN interface of Compex NetPassage 16A
has been configured with a static IP.
Virtual Server based on Port Forwarding
When Virtual Server based on Port Forwarding is implemented, Internet
requests to the IP address of Compex NetPassage 16A’s WAN interface will
be forwarded to a specific computer in the private network based on the TCP
port of the Internet request. Refer to Figure 3.3a.
Figure 3.3a Virtual Server based on Port Forwarding
Figure 3.3a shows two Virtual Servers implemented, HTTP Virtual Server and
FTP Virtual Server. To implement the Virtual Server, you need to know the
TCP port that the intended application is using.
For example, suppose that your ISP has assigned an IP address of
203.120.12.10 to your Compex NetPassage 16A, and you wish to host a web
server in your private network on a computer with an IP address of
192.168.168.10; you need to define a Virtual Server at TCP Port 80 (used by
HTTP by default) to be forwarded to 192.168.168.10. Once implemented, all
“http://203.120.12.10” requests will be forwarded to the computer with
192.168.168.10 IP address. If you wish to host another FTP server in your
private network on a computer with an IP address of 192.168.168.20; you will
then need to define a Virtual Server at TCP Port 21 (used by FTP by default)
to be forwarded to 192.168.168.20.