Web Client Networking Guide

V6.0 + v6.10 ONLY

(DOES NOT APPLY TO v7.0 ONWARDS)

 

 


Technical Paper

 

 


Abstract

This paper shows how to run both WAN and LAN Web Clients

 

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Contacts

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Contents

 

SettING up a LAN router to accept WAN Web Clients

 

A Web Client can be located outside of the Local Area Network (LAN) to which both the CitectSCADA and Web servers are located within. This may look something like the following:

 

 

 

 

 

 

To simplify explanations, the CitectSCADA server contains all the IO, Report, Alarm and Trend servers. Typically the router will mask the IP addresses of computers within the local network from the Internet, thus making it more difficult for a hacker to target a specific computer within the local network.

 

Your router must have the port forwarding feature so that any incoming requests on certain ports get forwarded to the appropriate server. The following table defines the ports required for a Web Client to communicate with the CitectSCADA and Web Servers:

 

 

 

Server

Port

Web

80

Report

2075

Alarm

2076

Trend

2077

I/O

2078

 

 

 

If your router has an inbuilt firewall blocking incoming communication, you must make sure that you define the above port numbers on the exclusion list to allow communication between client and servers.

When the Web Client wishes to login to the Web Server, it should use the WAN IP address of the router (123.123.123.123 from the above diagram) when entering the url address in Internet Explorer. The router will forward this request, which is on port 80, to the Web Server following the port redirection definition.

 

When creating the deployment in the Web Server using the web interface you need to specify the IP address of the CitectSCADA server(s). This is shown following.

 

 

 

 

 

Alternatively this can be set in the Citect.ini for the web client that gets downloaded from the Web Server deployed directory:

 

[DNS]

Primary=123.123.123.123

 

This is the WAN address of the router, so that the Web Client sends its CitectSCADA server requests to the router which then forwards the packets to the CitectSCADA server.

 

 

 

Running Both WAN and LAN Web Clients

 

 

To run both the Wider Area Network (WAN) and LAN clients you need to define to web deployments. This is because the Citect WAN web client uses the WAN IP address of the router that the Citect LAN web client cannot access. The Citect LAN web client will have to use the LAN IP address, in the example above will have to use 192.168.0.3 instead of the 123.123.123.123. Thus the web deployment user interface will look like the following:

 

 

 



Disclaimer

Disclaimer of All Warranties 
SCHNEIDER ELECTRIC (AUSTRALIA) PTY LTD DISCLAIMS ANY AND ALL WARRANTIES WITH RESPECT TO SCHNEIDER ELECTRIC (AUSTRALIA) PTY LTD PRODUCTS AND THE RELATED DOCUMENTATION, WHETHER EXPRESS OR IMPLIED, INCLUDING SPECIFICALLY THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A GENERAL OR PARTICULAR PURPOSE. CITECTSCADA AND THE RELATED DOCUMENTATION ARE PROVIDED "AS IS," AND YOUR COMPANY UNDERSTANDS THAT IT ASSUMES ALL RISKS OF THEIR USE, QUALITY, AND PERFORMANCE.

Disclaimer of Liability 
YOUR COMPANY AGREES AND ACKNOWLEDGES THAT SCHNEIDER ELECTRIC (AUSTRALIA) PTY LTD SHALL HAVE NO LIABILITY WHATSOEVER TO YOUR COMPANY FOR ANY PROBLEMS IN OR CAUSED BY SCHNEIDER ELECTRIC (AUSTRALIA) PTY LTD PRODUCTS OR THE RELATED DOCUMENTATION, WHETHER DIRECT, INDIRECT, INCIDENTAL, SPECIAL, OR CONSEQUENTIAL (INCLUDING LOSS OF PROFITS).

 

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