Siemens SINAMICS Configuration Manual page 24

General security measures
4.2 Network security
Principle of cell segmentation
The following application example shows cell segmentation by several SCALANCE S modules,
each of which is upstream of the automation cells. The firewall of SCALANCE S filters and
controls the data traffic from and to the devices within the automation cells. If required, the
traffic between the cells can be encrypted and authenticated. Secure channels and client
access from the PCs to the cells can be established via SOFTNET Security Client, VPN client
software for PCs.
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Configuration Manual, 08/2017, A5E36912609A
Industrial Security