vTPM Redirector Router Service for Secure VM Migration
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Solution Overview
Problem
Existing information handling systems face challenges in securely migrating virtual machines with TPM support across different servers or hypervisors without losing TPM integrity, and in managing a plurality of virtual machines across clusters of vTPM domain services.
Innovation Solution
The implementation of a policy-driven vTPM redirector/router service system that manages the mapping of virtual machines to vTPM domain services, providing automatic redirection and routing support to ensure secure migration and maintenance of TPM integrity across clusters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If virtual machines with TPM support are migrated across different servers or hypervisors, then system flexibility and resource utilization are improved, but maintaining TPM integrity and security becomes more difficult
Solution Approach 1:
The patent introduces a redirector service as an intermediary component that sits between the virtual machine and the vTPM domain service. This redirector service receives connection requests from TPM-vTPM modules, validates them against policies, determines the appropriate vTPM domain service, and routes the requests accordingly. This intermediary architecture enables virtual machine migration while maintaining TPM integrity by providing centralized policy enforcement and connection management across the cluster.
2Quantity of substance
If a plurality of virtual machines are managed across clusters of vTPM domain services, then system scalability is improved, but connection management complexity increases
Solution Approach 1:
The redirector service is designed as a universal component that handles multiple functions: connection request validation, policy evaluation, vTPM domain service determination, and request routing. This multi-functional design simplifies the overall system architecture by consolidating connection management tasks in a single service rather than requiring each vTPM domain service to handle management logic, thereby reducing complexity while supporting large numbers of virtual machines across clusters.
Solution Approach 2:
The redirector service acts as a central mediator that manages all connection requests between virtual machines and vTPM domain services. By introducing this intermediary layer, the system achieves centralized control over connection management, policy enforcement, and service routing, which simplifies the management of large numbers of virtual machines across multiple vTPM domain services in the cluster.
3Device complexity
If manual management of TPM connections is used, then system simplicity is maintained, but administrative burden and time consumption increase
Solution Approach 1:
The redirector service implements automated self-service functionality by receiving connection requests from TPM-vTPM modules, automatically validating them against stored policies, determining the appropriate vTPM domain service, and routing requests without human intervention. This automation eliminates the need for manual administrative management of TPM connections, significantly reducing administrative time and burden while maintaining system simplicity through a standardized automated process.
Solution Approach 2:
The system implements feedback mechanisms where the redirector service continuously monitors connection requests, validates them against policies, and adjusts routing decisions based on the validation results. This automated feedback loop enables the system to dynamically manage TPM connections without manual intervention, reducing administrative burden while maintaining security and integrity through continuous policy enforcement.
Data Source
AI summary
An information handling system may validate a connection request received from a trusted platform module (TPM)-virtual (vTPM) module according to a policy, wherein the connection request originated from a virtual machine associated with the TPM-vTPM module which consumes services from a clustered vTPM domain service. In response to determining that the connection request is valid based on the policy, the system may determine the vTPM domain service associated to the TPM-vTPM module, and determine whether to route or redirect the connection request according to policy. In response to determining that the connection request is to be redirected, the system may transmit a response to the TPM-vTPM module, wherein the response includes redirect information to the vTPM domain service. In response to determining that the connection request is to be routed, the system may route the connection request to the vTPM domain service.