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EXCEL WEB CONTROL SYSTEM – NETWORKING WHITE PAPER

EN2B0396GE51 R1214 - 2 -

SCOPE

This document examines aspects of networking and network

security Aspects relating to the Excel Web controller. It also

contains a Network Integration Checklist.

It is intended to assist Honeywell Sales and Technical

personnel in project coordination with the customer's IT

department and operational staff.

RELATED DOCUMENTS

The following related documentation can be accessed on the

Honeywell docuserver at the following URL:

http://web.ge51.honeywell.de/dep/mc/Building_Automation/C

entralPlantControls/Excel_Web_II/TechLit/

Table 1. Related literature on Honeywell docuserver

Title Prod.-Lit. No.

Excel Web - User Guide EN2B-0289GE51

Excel Web - BACnet PICS XL1000C_PICS_30

-July-2008.pdf

Excel Web - Inst. & Comm. Instructions EN1B-0256GE51

Excel Web - Product Data EN0B-0443GE51

Table 2. Additional related literature

Title

EBI_R310_Network_and_Security_Planning_Guide

EBI and/or SymmetrE BACnet PICS

Honeywell BACnet Architecture Best Practices

NETWORK SECURITY

Honeywell hereby expressly states that the Excel Web

controller is not inherently protected against cyber attacks

from the Internet and that it is therefore intended solely for

use in private, protected networks.

Unprotected Internet connections can expose the Excel Web

controller to cyber attacks from third parties who can then

damage it and connected facility components or cause them

to malfunction, or who can misuse it for illegal purposes for

which the operator may then be held liable.

When directly connected to the Internet, the Excel Web

controller automatically becomes a potential target for cyber

attacks. Corresponding protective measures are therefore

essential if safe and reliable operation is to be ensured.

If it is not necessary for the Excel Web controller to be

accessible from the Internet, it should be isolated from the

Internet via a suitable firewall.

If it is necessary for the Excel Web controller to be

accessible from the Internet (e.g., in order to perform remote

maintenance), the use of a coded VPN connection is

indispensable. Suitable VPN routers are available from

numerous third-party manufacturers in a wide variety of

designs, for operation at 230 V or 24 V.

Operating System

Excel Web uses the following Linux kernel versions:

• 2.4.25 (used in the Excel Web Linux version

1.xx.xx)

• 2.6.15 (used in the Excel Web Linux version

2.xx.xx)

Web-Server

Excel Web uses the Apache web-server by default.

For extremely sensitive environments (like military

installations) the web-server can be disabled.

Note: This option requires manual intervention by a

technically knowledgeable person. This deactivation of the

web-server has to be re-done after a Linux download has

been done, because the standard Linux OS will have

included the web-server functionality by default.

If the web-server functionality has been disabled, the

operation of the Excel Web is limited to BACnet clients only,

e.g. Honeywell EBI/SymmetrE or 3

The number of concurrent Internet Browsers accessing

the Excel Web is limited to16.

party BACnet clients.

Ports required

This section defines ports required to be opened within a

software or hardware firewall, in order to enable functionality

of programming and/or operating and/or debugging Excel

Web controllers in a network, or from outside the network.

Internet Browser Access – Port 80

Excel Web can be operated with Internet Browsers. This will

require port 80 to be opened in the network.

Browser Access also allows for downloading trend data in

“csv” format from Excel Web to the Client PC/Laptop.

The SVGA web-pages of Excel Web are compatible with the

following web-browsers:

• Internet Explorer: Tested versions 9.0

• Firefox: Tested versions 15.0

• Google Chrome:

The Internet Browser must support the following

requirements:

• HTML 4.01 supported

• CSS-1 supported

• JavaScript 1.3 supported

• DOM Level 1 supported

• Frames supported

• Full Screen supported

The QVGA web operation has been optimized for Internet

Explorer for WIN CE 5.0

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