THOMSON SpeedTouch 716, Руководство пользователя

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Chapter 7
Advanced Configuration
E-DOC-CTC-20041126-0014 v3.0
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7.1 Setting up a Virtual Server
Introduction
Using Network Address Translation (NAT), the SpeedTouch™ is able to make your
local network act as a single machine to the Internet. This enables you to divide the
services of your server over different host computers.
When the SpeedTouch™ receives an incoming IP packet requesting access to your
local server, the SpeedTouch™ will recognise the service type according to the port
number in this packet (for example, port 80 indicates HTTP service and port 21
indicates FTP service). By specifying the port number, the SpeedTouch™ is able to
forward this service to the correct local IP.
Example configuration I
n the example below, both Internet users are connecting to the same IP address,
but using different protocols. To access:
The virtual web server they have to enter http://203.70.212.52.
The virtual FTP server they have to enter ftp://203.70.212.52.
WAN IP address
To Internet users, all your virtual servers have the same IP Address. This IP Address
is allocated by your ISP. This address should be static, rather than dynamic, to make
it easier for Internet users to connect to your Servers.
Internet
DSL PPP WLAN Ethernet
VoIPReady
Phone USB PWR
1 4 3 2
Web Server
IP address: 192.168.1.10
FTP Server
IP address: 192.168.1.20
http://203.70.212.52
Remote PC using web server
ftp://203.70.212.52
Remote PC using FTP Server
WAN IP address: 203.70.212.52
You can also use Dynamic DNS feature to allow users to connect to your
virtual servers by using a URL, instead of an IP address.