Isolated Virtual Machine Communication via Network Filter
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Solution Overview
Problem
In cloud computing environments, isolated virtual images face challenges in sharing and consuming data from external resources while maintaining network isolation and security protocols, as traditional methods restrict communication outside their isolated environment.
Innovation Solution
The system employs a service request with a predetermined non-existent address, which is routed through a shared resource and security appliance machine, allowing isolated guest virtual machines to access external services without compromising network isolation rules, using a hypervisor-supported network filter to facilitate communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If network isolation rules are enforced to maintain security, then security is improved, but communication capability with external resources deteriorates
Solution Approach 1:
The patent introduces a network filter as an intermediary component that sits between the isolated virtual machine and external resources. This filter intercepts service requests, reformulates them with valid destination addresses, and forwards them through appropriate network interfaces. The intermediary enables communication functionality while maintaining the isolation boundary, as the virtual machine itself never directly communicates with external resources.
Solution Approach 2:
The patent segments the communication path into distinct components: the isolated virtual machine, the network filter, and external resources. By dividing the communication flow into separate segments with clearly defined boundaries and responsibilities, the system allows controlled interaction while maintaining isolation. The network filter segment handles address translation and routing, enabling the virtual machine to access external resources without compromising security.
2Reliability
If isolated virtual machines are restricted from external communication, then security is improved, but service accessibility deteriorates
Solution Approach 1:
The network filter acts as a mediator that transparently handles service requests from isolated virtual machines. It intercepts requests with non-existent addresses, translates them to valid addresses, and forwards them to appropriate external services. This mediation process maintains security by preventing direct access while improving service accessibility by automatically routing requests to available services.
Solution Approach 2:
The system implements self-service functionality where the network filter automatically handles address translation and service routing without requiring manual configuration on the virtual machine. The filter monitors service requests, identifies those needing external access, and autonomously reformulates and forwards them, making services accessible while maintaining isolation.
3Reliability
If service requests use predetermined non-existent addresses, then isolation rules are maintained, but routing complexity increases
Solution Approach 1:
The network filter serves as an intermediary that absorbs the routing complexity. Virtual machines use simple predetermined non-existent addresses, and the filter handles the complex task of translating these to valid external addresses. This intermediary approach maintains isolation through consistent address translation while managing routing complexity within the filter component rather than the virtual machine or network infrastructure.
Data Source
AI summary
Provided herein are systems and methods for providing isolated virtual image communication in a virtual computing environment. Initially, a guest virtual machine that is activated in a virtual computing environment may be isolated into a private network. A service request may then be formulated at the guest virtual machine and addressed to a predetermined non-existent address. The request is then ostensibly sent to the predetermined address, whereupon the service request is actually transmitted to a shared resource with a security appliance machine in the virtual computing environment. The request is then forwarded to the security appliance machine and a reply formulated. The reply is sent back to the guest virtual machine via the shared resource.