Three Aspects to Consider When Securing Industrial Automation Control System Networks
The main benefit of an industrial automation control system (IACS) is that it facilitates greater efficiency through remote management, the ability to converge multiple networks, and the automation of network processes. However, the vulnerability of IACS networks increases as more devices and networks require access, which is common within the Industrial Internet of Things (IIoT). It is crucial that system operators do not sacrifice the security of the network when reaping the benefits of IACS networks. For example, when networks converge, someone with malicious intent who has gained access to a single device on the network can easily control and corrupt other areas and devices on the network.
Although the risk of a security breach on IACS networks can never be completely eliminated, system operators must follow best practices in order to minimize this risk. This article will now briefly consider three aspects that many cybersecurity experts believe system operators need to address in order to ramp up the security of IACS networks.
Three Factors that Help Ramp Up the Security of Industrial Networks
How to Implement a Secure Industrial Network
The section below will give system operators a step by step overview of the three aspects that need to be considered in order to implement a defense-in-depth security architecture.
Defense-in-Depth Security Architecture
Network segmentation involves breaking down the network into physical or logical zones with similar security requirements.
Step 2: Define zone-to-zone interactions in order to scrutinize and filter network traffic.
In order to enhance network security, the traffic that passes between zones in the IACS must be scrutinized and filtered.
Step 3: Support secure remote access on industrial networks.
For networks that require the remote site to be constantly connected to the IACS, it is advised to use a VPN that supports a secure encryption method such as IPsec, which prevents unauthorized users from accessing the network.
Secure Industrial Network Devices
Secure Monitoring and Management
To learn more about what has to be achieved in order to build, manage, and maintain secure IACS networks, please download the white paper: Three Aspects to Consider in Order to Secure Industrial Automation Control System.
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