Secure Enclave Segmentation Policy via Automated Cross-Boundary Rules
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Solution Overview
Problem
Implementing a segmentation policy within a secure enclave is challenging due to fragmentation of policy management, leading to operational overheads and policy correctness issues, as the enclave protection device may disrupt consistent enforcement of traffic rules.
Innovation Solution
A policy management server automatically configures an enclave protection device by generating and distributing rules and membership information to enforce a segmentation policy across workloads, allowing efficient updates in response to changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the enclave protection device is configured to protect workloads from external threats, then security is improved, but the device may disrupt enforcement of segmentation policies within the enclave
Solution Approach 1:
The patent introduces a policy management server as an intermediary between the segmentation policy and the enclave protection device. This server automatically generates and distributes configuration rules to the protection device, ensuring that security enforcement is consistent with segmentation policies without manual intervention or disruption.
Solution Approach 2:
The policy management server performs preliminary actions by proactively generating and distributing configuration rules to the enclave protection device before policy violations occur. This ensures the device is pre-configured to enforce segmentation policies correctly, preventing disruptions rather than reacting to them.
2Reliability
If manual configuration of the enclave protection device is performed, then policy correctness can be maintained, but operational overheads increase and turnaround time lengthens
Solution Approach 1:
The policy management server enables self-service by automatically generating, distributing, and updating configuration rules for the enclave protection device without requiring manual administrator intervention. This automation maintains policy correctness while eliminating the operational overhead and long turnaround times associated with manual configuration.
Solution Approach 2:
The system performs preliminary actions by automatically preparing and distributing configuration rules before they are needed, ensuring the protection device is always up-to-date with current segmentation policies without requiring manual updates.
3Reliability
If the enclave protection device blocks all external traffic by default, then security is improved, but legitimate cross-boundary traffic may be disrupted
Solution Approach 1:
The policy management server performs preliminary actions by proactively generating allow rules for legitimate cross-boundary traffic before such traffic attempts to flow. This ensures that security defaults block malicious traffic while legitimate traffic flows smoothly according to pre-configured segmentation policies.
Solution Approach 2:
The system implements feedback mechanisms where the policy management server monitors traffic patterns and policy requirements, then automatically adjusts configuration rules to ensure legitimate cross-boundary traffic is permitted while maintaining security defaults.
Data Source
AI summary
A policy management server manages a segmentation policy and automatically configures an enclave protection device consistently with the segmentation policy so that that the segmentation policy can be enforced with respect to workloads within a secure enclave protected by the enclave protection device. The policy management server identifies protected workloads that are members of a secure enclave and external workloads that are external to the secure enclave. The policy management server identifies cross-boundary rules of the segmentation policy affecting traffic between the protected workloads and external workloads. The policy management server generates and distributes a configuration of the enclave protection device to enable enforcement of the cross-boundary rules pertaining to traffic passing through the enclave protection device.