XRT-101 / XRT-711
xDSL/Cable Access Router
Appendix E. Virtual Servers
This feature is available only if you are using
the Internet Access Server for shared Internet access, rather than for LAN-to-LAN
connection.
The Virtual Servers feature allows Internet users to access standard
Servers on your LAN, via the Internet Access Server.
Normally, Internet users would not be able to access a server on your LAN because:
Your Server does not have a valid external IP Address.
Attempts to connect to devices on your LAN are blocked by the firewall in this device.
The "Virtual Server" feature solves these problems and allows Internet users to connect to your servers. However, your LAN must have an existing connection to the Internet. Internet users cannot open a connection.
Virtual Server operation is illustrated below.
Figure 1: Virtual Server Operation
Note that, in this illustration, both Internet
users are connecting to the same IP Address, but using different protocols.
To Internet users, all virtual Servers on your LAN have the same IP Address.
This IP Address is the IP Address on the External LAN Port screen.
The Internet Access Server supports two (2) types of Virtual Servers:
Standard - Standard server types (Web, FTP, etc) are pre-defined. The only data required is the IP Address of the server on your LAN.
User-defined - Non-standard servers. You must provide additional information about the server.
Note that the TOTAL number of Virtual Servers which can be used is 10.
E.2 Virtual Server Configuration
The Virtual Servers screen is reached via the Virtual Servers link on the Advanced Internet Features screen. An example screen is shown below.
Figure 2: Virtual Servers
Enable the Server type or types you wish to use
Enter the IP Address of each server on your LAN
Click Save when finished.
E.3 User-defined Virtual Servers
If the type of Server you wish to use is not listed
on the Virtual Servers screen, you can define it using this feature.
The screen for this function is reached via the User Defined Virtual Servers
option on the Advanced Internet Features screen.
Figure 3: User Defined Virtual Servers
To Create a new Server
Click "Clear Form"
Enter the required data (See next section)
Click "Add"
To Modify (Edit) a defined Server
Select it from the drop-down list
Click "Get Data"
Make any desired changes. Note that you can "Enable" and "Disable" a Server using this process.
Click "Update"
To Delete a defined Server
Select it from the drop-down list
Click "Delete"
To List all Servers
Click "List All"
Name | Enter the desired name. Note
the limitations on names:
|
Enable | Use this to Enable or Disable support for this Server, as required. |
IP Address | The IP Address of the PC on your LAN which is running the Server software. |
Protocol | Select the protocol (TCP or UDP) used by the Server. |
Internal Port Number | Enter the port number used by the Server to connect to clients. |
External Port Number | The port number used by clients
when connecting to the Server. This is normally the same as the Internal
Port Number. If it is different, this device will perform a "mapping" or "translation" function, allowing you to configure the server to use one port address, while clients use a different port address |
E.4 Connecting to the Virtual Servers
Once configured, anyone on the Internet can connect to your Virtual Servers. For the destination address, they must enter the IP Address shown in the IP Address allocated by ISP on the Internet Account screen for the port you are using.
This address should be static (fixed)
to make connection easier.
e.g. http://203.70.249.252
E.5 Using this Device as a Virtual Web Server
It is possible to configure the Internet Access
Server itself as a Virtual Web Server. Once this is done, you can configure
this device through the Internet.
For the remote PC, the destination IP Address is the IP Address allocated
by ISP shown on the Internet Account screen, for the port you are
using.
Upon connecting to the Internet Access Server, you will be prompted for the
device password.
You should set a password!
Enable WEB Server on the Virtual Servers screen
Enter the Device IP Address (on the Internal LAN Port screen) as the IP Address of the Web Server.
[Top of this Chapter] | ![]() |
![]() |
||
Copyright (C) 2001
PLANET Technology Corporation
|