PSI provides security proxy for secure power grids

Process interfacing of IEC 60870-5-104 telecontrol channels to PSIcontrol systems. Photo: PSI

Process interfacing of IEC 60870-5-104 telecontrol channels to PSIcontrol systems. Photo: PSI

Secure IEC-104 process interfacing protects critical infrastructures

Berlin, 4 June 2018 – PSI offers the IEC 104 Security Proxy for securing the power supply networks. Currently, many new plants have to be connected to the power distribution grids. However, these are no longer under the full control of utilities, as they are connected via public networks or, as with renewable energy, operated by third parties. For the connection, preferably the protocol IEC 60870-5-104 is used.

Energy suppliers currently have few options for ensuring the correctness of the protocol and the transmitted data before these are evaluated and processed in the control system. PSI's IEC 104 Security Proxy can now be installed as a firewall at application level in the data path between the control system and the telecontrol stations. It performs transparently, so neither the control system nor the telecontrol station needs to be reparametrized for this. The security proxy terminates the connection between the control system and the proxy and establishes a separate IEC-104 connection to the telecontrol station.

This fulfills one of the most important security requirements since there are no direct TCP connections from external devices to the control system core allowed. In addition, defective packages are filtered from the data stream and documented. A listening mode and helpful functions for error analysis are also available. The immediately available IEC 104 Security Proxy helps to protect against bottlenecks and power failures.

Based on its own software products, PSI Group develops and integrates complete solutions for optimizing the flow of energy and materials for utilities (energy networks, energy trading, public transport) and industry (mining, metals production, automotive, mechanical engineering, logistics). PSI was founded in 1969 and employs more than 1,700 people worldwide.