Network Appliance Bootstrapping for Certificate and Firmware Updates
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Network appliances often have outdated firmware and certificates by the time they are deployed due to prolonged storage before shipment, leading to connectivity issues with cloud-based services.
Innovation Solution
Network appliances are equipped with self-signed certificates with long expiration dates and can update firmware by contacting a cloud controller service during bootup to obtain the latest certificates and firmware from hosted services.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If appliances are manufactured in bulk and stored in warehouses before shipment, then manufacturing efficiency and cost are improved, but the firmware and certificates become outdated by the time of deployment
Solution Approach 1:
The patent applies preliminary action by equipping appliances with self-signed certificates with long expiration dates (e.g., 20 years) during manufacturing, allowing them to maintain valid authentication credentials throughout storage and deployment. The appliance then performs self-updates of root certificates and firmware after deployment, ensuring currency without compromising manufacturing efficiency.
2Reliability
If appliances are updated with latest firmware before shipment, then firmware currency is improved, but storage costs and complexity increase
Solution Approach 1:
The patent applies self-service by enabling appliances to automatically update their own root certificates and firmware after deployment. The appliance contacts a hosted service during boot-up to retrieve updated certificates and firmware, eliminating the need for manual update management and reducing storage complexity while maintaining firmware currency.
3Duration of action of stationary object
If self-signed certificates with long expiration dates are used, then certificate validity duration is improved, but security trust model complexity increases
Solution Approach 1:
The patent uses self-signed certificates as an intermediary mechanism that allows appliances to authenticate with hosted services without requiring pre-configured trust of specific certificate authorities. The long-validity self-signed certificates serve as a temporary bridge until the appliance can establish trusted communication with the hosted service for certificate updates, simplifying the initial trust model while maintaining security.
Data Source
AI summary
Systems and methods for updating a network appliance. The method includes receiving an update request from a network appliance, wherein the update request includes at least one self-signed certificate; executing an authentication procedure to authenticate the network appliance; providing the network appliance with at least one updated certificate associated with a controller device; enabling communication between the appliance and a controller device; and providing to the appliance a network resource location indicator of a firmware repository including an updated firmware version to allow the appliance to obtain the updated firmware version.