Network Router User Manual

ADVANCED SETUP
57
Virtual Server
If you configure the Router as a virtual server, remote users accessing
services such as web or FTP at your local site via public IP addresses
can be automatically redirected to local servers configured with
private IP addresses. In other words, depending on the requested
service (TCP/UDP port number), the Router redirects the external
service request to the appropriate server (located at another internal
IP address).
For example, if you set Type/Public Port to TCP/80 (HTTP or web)
and the Private IP/Port to 192.168.2.2/80, then all HTTP requests
from outside users will be transferred to 192.168.2.2 on port 80.
Therefore, by just entering the IP Address provided by the ISP,
Internet users can access the service they need at the local address to
which you redirect them.
The more common TCP service ports include:
HTTP: 80, FTP: 21, Telnet: 23, and POP3: 110