SMC Networks Barricade SMC7004ABR User Manual page 53

Cable/dsl broadband router built-in 4-port 10/100 mbps switch

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Advanced Setup

Virtual Server

If you configure the Barricade 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

Barricade 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.

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