CYBER SECURITY 80 – the default port number for a web server – which protects Sysmac machine controllers by allowing communication only from within the Sysmac Studio configuration, programming, simulation, and monitoring software environment. Communication between the machine controllers and Sysmac Studio is not encrypted; instead, it is protected via digest authentication – a method that enables a web server to check a user’s credentials, such as their username and/ or password, with their web browser. The identity of a user can be confirmed before information is released to the network by applying a hash function to the username and password before transmission. Moreover, Sysmac controllers cannot send service data object (SDO) messages to the control network from external sources, so it is essentially isolated from the information network. Advanced functions to protect investment in, and the security of,
machines are standard in the Sysmac Studio software. Preventing incorrect connections, unauthorised operation or theft of assets are protected by features such as confirmation of controller names and serial IDs, administrator access rights and controller write protections. Meanwhile, authentication of user program execution and password protection for project files provide protection for the user’s intellectual property. Barriers that have traditionally existed between IT and OT departments will have to come down if a true Industry 4.0 implementation is to be realised. IT departments have, for many years, been fully aware of cyber threats and the potential damage that can ensue if systems are not adequately protected. For OT engineers, however, attacks on their systems are a relatively recent phenomenon and the threats and risks may or may not yet be fully understood. Even today, the IT and OT functions
remain generally independent of one another and it is normally the IT department that has any control over the prevention of cyber attacks on the enterprise by restricting access to the enterprise networks. Within the concepts of Industry 4.0 restricting access to the enterprise networks would be unacceptable, so it is important that IT and OT departments start to work together to combat the greater risks posed by the open networks of Industry 4.0. Such a collaboration would also go a long way to improving the skills of those less familiar with cyber security and its relevance to their operations. Manufacturers embracing the Industry 4.0 paradigm need to up-skill their operational staff, assess the potential cyber threat risks and develop a security plan commensurate with their organisational structures. Barry Graham is automation product marketing manager at Omron.
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