Security When Accessing Process Data - Siemens S7-300 Configuration Manual

S7-CP Advanced as Web server: HTML process control

10.2 Security when accessing process data

● Create applicationspecific applets and use the supplied S7 beans.
● Create Java source code; use applicationspecific applets, Java beans and the supplied
S7 beans.
You will find a detailed description in the manual on the S7 applets / beans /22/ (Page 234).
Extended access and display options - The Java Beans concept
The Java Beans concept allows you to create objects (Java components) and to link them
simply to executable programs.
There is an S7 beans class library available for the Advanced CP (S7BeansAPI). The object
classes contained in this library can be used for objectoriented access to a variety of
information on the SIMATIC S7 and for graphic display of process variables.
The S7 beans class library provides an open interface allowing you to extend process data
evaluation for example with databases, table calculation or management information
systems.
Organizing files - resources of the IT CP
The Advanced CP has memory available for storing your HTML pages. You will find
information on this topic in the device manual of the Advanced CP /1/ (Page 227).
Please note the information in the "readme.htm" file on the Advanced CP.
This contains information about the meaning and purpose of the shipped files. You can then
decide which files might be useful for your application. Using FTP functions, you can
organize the files on the Advanced CP to suit your requirements.
10.2 Security when accessing process data
Guaranteeing information security
The access to process data by the Advanced CP via the Internet brings with it the danger of
misuse. You should therefore not only protect the process data with passwords. If passwords
are transferred unencrypted, simple password protection using FTP does not provide
adequate security.
Make sure that access to your network is protected by suitable security measures. The
SIMATIC NET components with security functionality provide the required protective
functions.
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Configuring and commissioning S7 CPs for Industrial Ethernet
Configuration Manual, 09/2013, C79000-G8976-C182-13