Virtual Machine Security Agent for Cloud Infrastructure
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Solution Overview
Problem
Cloud computing environments face significant security challenges due to the lack of control over network topology and hardware, leading to increased exposure to botnet attacks and vulnerabilities, as well as the dynamic nature of virtual machines which complicates traditional security measures.
Innovation Solution
A system utilizing an agent executive that operates within a virtual machine to provide automated, portable, and elastic security management, including firewall management, vulnerability detection, compliance monitoring, and intrusion prevention, which securely interoperates with a remote grid computer system to maintain security and integrity across multiple virtual machines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional perimeter security controls are implemented in cloud IaaS environments, then network security inspection capability is improved, but control over network topology and hardware is required which is unavailable in public IaaS
Solution Approach 1:
The patent introduces a security appliance that acts as an intermediary between virtual machines and the network. This appliance is deployed within the virtualized environment but provides perimeter security functions, effectively mediating between the need for security inspection and the lack of control over external network infrastructure. The security appliance intercepts and inspects traffic without requiring control over the underlying physical network topology.
Solution Approach 2:
The patent moves security controls from the network perimeter dimension to the virtual machine dimension by deploying security appliances within individual VMs or VM groups. This dimensional shift allows security inspection to occur at the virtualization layer rather than requiring control over physical network infrastructure, enabling perimeter security functionality in environments where traditional network-based controls are unavailable.
2Measurement precision
If security inspection is performed at wire level for each cloud server, then security monitoring precision is improved, but performance impact becomes staggering due to lack of hardware control
Solution Approach 1:
The patent merges security inspection functionality with the virtualization infrastructure by deploying security appliances that operate within the virtualized environment. This consolidation allows security monitoring to leverage the existing virtualization layer's efficiency rather than implementing separate wire-level inspection for each VM, reducing overall performance overhead through shared resources and centralized processing.
Solution Approach 2:
The patent uses virtualization to create virtual copies of network interfaces and security functions that can be deployed with virtual machines. Instead of implementing heavy wire-level inspection hardware for each physical server, the system uses virtual network interfaces that can be efficiently copied and managed at the virtualization layer, maintaining security monitoring precision while reducing performance impact through software-based virtual networking.
3Object-generated harmful factors
If cloud servers are compromised for botnet command-and-control, then botnet capacity grows through cloning and cloud bursting, but security defense capability is weakened due to elastic infrastructure replication
Solution Approach 1:
The patent implements security appliances that perform preliminary security inspections and validations before virtual machines are cloned or burst. By establishing security checks at the point of VM creation and deployment, the system can prevent compromised configurations from being replicated across elastic infrastructure, addressing security concerns before they propagate through cloud bursting operations.
Solution Approach 2:
The patent implements feedback mechanisms where security appliances continuously monitor virtual machine behavior and communicate security status back to the deployment system. This feedback loop enables real-time detection of compromised VMs and allows the system to prevent further cloning or bursting of infected instances, dynamically adjusting security defenses based on observed threat levels and VM integrity status.
Data Source
AI summary
A security server transmits a specification of a first set of files and directories to a computing device for monitoring according to a security policy. Each of the files or directories in the first set is associated with the operating system of the computing device or associated with an application running on the computing device. The server securely receiving data collected at the remote computing device, which includes metadata for the files and directories and content signatures computed for each file. The server compares the received metadata and content signatures for each file or directory against corresponding baseline metadata and baseline content signatures. The baseline metadata and baseline content signatures are stored at the security server. When there is a mismatch between the received metadata and corresponding baseline metadata or a mismatch between a received content signature and a corresponding baseline content signature, the server performs a remedial action.