OT cyber security for industrial production
Minimise the risk of downtime and ensure a rapid resumption of production
OT cyber security protects production networks, PLCs, HMIs, industrial computers and other control systems. An effective solution combines Restriction of unauthorised communication with regular backups of programmes and configurations.
Two key areas of protection for manufacturing technologies
Isolate machines and production lines from the corporate network and only allow devices, services and data flows that are genuinely necessary for production.
Show firewalls, bridges and NATSave control system programmes, configurations and documentation regularly so that you have the necessary materials ready to get production back up and running more quickly.
View PLC Auto BackupWe will examine network architecture, the integration of IT and OT, remote access, critical equipment and current backup methods.
Secure remote access via Ewon
See examples of network separation using Ewon routers and W&T firewalls. A brief overview of Talk2M deployment is available for network administrators.
In detail: how to get started with OT cyber security
Start with an overview of devices, communication and recovery options
Securing production involves more than simply installing a single firewall. First, it is necessary to understand the devices in use, network connections, remote access points, permitted communication and the availability of up-to-date backups of control systems.
Connect PLCs, HMIs, robots, industrial computers, switches and the links between production, IT networks and the internet.
Separate individual machines, production lines and process units according to their function, significance and level of risk.
Enable only the necessary protocols, services and connections, and remove any unnecessarily open communication channels.
Keep both current and previous versions of programmes and regularly check that they can actually be restored.
Industrial networks use specific protocols, devices and operational requirements. The chosen solution must correspond to the production topology, device availability and the required method of servicing.
Even preventative measures cannot eliminate all risks. An up-to-date and verified backup reduces recovery time following a failure, an erroneous programme change or a security incident.
Frequently asked questions on cyber security
IT security primarily protects information systems and business data. OT security focuses on the equipment and communications that directly control physical production.
Not always. It depends on the current topology, IP addresses, protocols used and the method of communication between devices and higher-level systems.
All that is required is a basic network topology, a list of critical devices, information on remote access, and a description of the current method of backing up PLCs and machines.
How to Meet NIS2 Requirements: Secure Remote Access with Ewon Routers and W&T Firewalls
The European NIS2 directive introduces new obligations for companies in protecting against cyber threats. Below, we compare these requirements with the technical measures in IEC 62443 and show how to meet them easily using Ewon industrial routers, the secure Talk2M cloud service, and firewalls from the German manufacturer W&T.
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