SMC Networks SMC7904BRB2 Manuel d'utilisateur télécharger pdf (Page 73)

ONFIGURATION

PARAMETERS

4-35

Virtual Server

If you configure the Barricade 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 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.

A list of ports is maintained at the following link:

http://www.iana.org/assignments/port-numbers.

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SMC Networks SMC7904BRB2 Manuel d'utilisateur Page 73