User guide

DSU ProxyServer User Guide

MTPSR2-201

With static IP addressing, the Global IP Address is the IP address that is seen by the Internet. This

global address will be used by the virtual server feature to filter (by functionality) the activity of the

traffic to and from the Internet. The addresses we assigned to our servers in the virtual server

example are unregistered addresses that are seen only by the ProxyServer. These local IP

addresses are arbitrarily assigned to servers in our virtual server connection example. For example,

we assigned IP address of 192.168.11.20 to the FTP server, 192.168.11.30 to the Web server,

192.168.11.40 to the e-mail server, and 192.168.11.50 to the MultiVOIP.

These local addresses are then mapped to the global address by function. The FTP server was

assigned an IP address of 192.168.11.20 with a TCP and UDP protocol and a port number of 20 and

21. The Mapping Details [Local] group in the Virtual Server Mappings dialog contains the FTP server

local mapping information. When the FTP server mapping information is entered, the Web server can

be mapped to the global address by entering the IP address 192.168.11.30 in the Local IP Address

field of the Mapping Details [Local] group with its protocol and port information. Then the mail server,

and if a MultiVOIP is used in the local network - its mapping information, can be added to the local

mapping group.

The Virtual Server Setup dialog displays all the local mapping information.