Virtual Firewall Port Configuration for Industrial Automation
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Solution Overview
Problem
Industrial automation networks face inefficiencies in configuring firewalls due to their rigid structure and predictable traffic patterns, which traditional firewall solutions struggle to adapt to, leading to suboptimal security and segmentation.
Innovation Solution
Implementing a virtual firewall on each port of devices communicating across zone boundaries within an industrial network, configured based on the network's operation and specific industrial protocols, enabling fine-grained, software-defined network (SDN) control for deterministic and secure communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional firewall solutions are used in industrial automation networks, then basic security protection is provided, but the firewall cannot adapt to the rigid structure and predictable traffic patterns, leading to suboptimal security and segmentation
Solution Approach 1:
The patent applies dynamics by making the firewall configuration adaptive and changeable based on network conditions. The system dynamically adjusts firewall rules to match the actual traffic patterns and network structure, transforming the static firewall into a dynamic security mechanism that evolves with the network environment.
Solution Approach 2:
The patent changes the parameters of firewall configuration from fixed to variable. By monitoring traffic patterns and network topology, the system automatically adjusts firewall parameters such as rule sets, zone definitions, and conduit configurations to optimize security enforcement for the specific industrial automation network characteristics.
2Reliability
If virtual firewalls are implemented on each port with fine-grained control, then security enforcement and validation are enhanced, but device complexity and configuration difficulty increase
Solution Approach 1:
The patent implements self-service by enabling the firewall system to automatically configure itself based on observed network behavior. The virtual firewalls monitor traffic patterns, identify legitimate communication flows, and automatically generate appropriate security rules, eliminating the need for manual configuration and reducing complexity despite the fine-grained control capability.
Solution Approach 2:
The system employs feedback mechanisms where the firewall continuously monitors network traffic and uses this information to refine its security rules. The feedback loop allows the system to learn from actual network operations and automatically adjust configurations, reducing the burden on administrators while maintaining high security standards.
3Reliability
If firewalls are synchronized with traffic flows and conduit locations, then granular control and compliance with security standards are achieved, but loss of time for configuration and setup increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring virtual firewalls on all ports before network operations begin. The system proactively establishes security zones and conduits based on expected network topology, allowing firewalls to be ready immediately upon network deployment rather than requiring time-consuming configuration after the fact.
Solution Approach 2:
The system automatically synchronizes firewall rules with traffic flows and conduit locations through self-configuration. By monitoring network operations and automatically adapting rules, the system achieves compliance with security standards without requiring manual intervention or time-consuming configuration processes.
Data Source
AI summary
In one embodiment, a virtual firewall is installed on a port of a device that communicates across a zone boundary within an industrial network. The virtual firewall is then configured based on operation of the industrial network, such that the port may then communicate via the firewall to a remote virtual firewall of a remote port of a remote device across the zone boundary.