CP 343-1 
Manual, 12/2018, C79000−G8976−C201-08 
43 
  Configuration and operation 
 
 
The front panel must be kept closed during operation. 
 
Keep to the following security recommendations to prevent unauthorized access to the 
system. 
●  You should make regular checks to make sure that the device meets these 
recommendations and other internal security guidelines if applicable. 
●  Evaluate your plant as a whole in terms of security. Use a cell protection concept with 
suitable products. 
●  Do not connect the device directly to the Internet. Operate the device within a protected 
network area. 
●  Keep the firmware up to date. Check regularly for security updates of the firmware and 
use them. 
●  Check regularly for new features on the Siemens Internet pages. 
–  Here you will find information on industrial security: 
Link: (http://www.siemens.com/industrialsecurity) 
–  Here you will find information on security in industrial communication: 
Link: (http://w3.siemens.com/mcms/industrial-communication/en/ie/industrial-ethernet-
security/Seiten/industrial-security.aspx) 
–  You will find a publication on the topic of network security (6ZB5530-1AP0x-0BAx) 
here: 
Link: 
(http://w3app.siemens.com/mcms/infocenter/content/en/Pages/order_form.aspx?node
Key=key_518693&infotype=brochures) 
Enter the following filter: 6ZB5530 
Restrict physical access to the device to qualified personnel. 
Do not connect the PC directly to the Internet. If a connection from the CP to the Internet is 
required, arrange for suitable protection before the CP, for example a SCALANCE S with 
firewall.