Secure Wireless Management Controller via SSH Tunnel
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Solution Overview
Problem
Current information handling systems face issues with wireless management and monitoring, including the need for users to disconnect from existing Wi-Fi connections, unreliable persistent connections due to OS interference, and difficulties in accessing management and monitoring systems, which can lead to man-in-the-middle attacks and security vulnerabilities.
Innovation Solution
The implementation of a peer-to-peer wireless network connection using Wi-Fi Direct, which establishes a secure and seamless connection by authenticating devices through SSH public keys and randomly identified ports, and encrypting outbound packets while decrypting inbound packets, thereby preventing unauthorized access and ensuring secure communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional Wi-Fi connection is used for management and monitoring, then network coverage is extensive, but users must disconnect from existing Wi-Fi connections and OS interference causes unreliable persistent connections
Solution Approach 1:
The patent introduces a peer-to-peer wireless connection as an intermediary communication channel between the mobile device and management controller. This direct connection bypasses the traditional Wi-Fi infrastructure and operating system network stack, eliminating OS interference and connection reliability issues while requiring minimal user interaction to establish.
2Reliability
If traditional wireless management is used, then setup is simple, but security vulnerabilities exist including man-in-the-middle attacks
Solution Approach 1:
The patent performs preliminary authentication actions by establishing a secure SSH tunnel before actual management operations. The SSH public key authentication is set up in advance, creating a encrypted communication channel that prevents man-in-the-middle attacks. This preliminary security setup ensures that all subsequent communications are protected without requiring complex real-time authentication.
3Reliability
If peer-to-peer wireless connection is established, then security is improved through SSH encryption, but device complexity increases due to multiple wireless interfaces and authentication protocols
Solution Approach 1:
The patent extracts the essential security functionality by using SSH encryption specifically for the peer-to-peer wireless communication channel. Instead of implementing complex security throughout the entire system, the solution focuses on extracting and applying cryptographic protection only where needed - in the direct wireless connection between mobile device and management controller - thereby achieving high security with minimal added complexity.
Data Source
AI summary
An information handling system includes a wireless management controller having a first wireless network interface used to establish a secure short-range wireless network connection between a management controller and a mobile device. A second wireless network interface establishes a peer-to-peer wireless network connection between the management controller and the mobile device. The management controller stores a secure shell public key received from the mobile device through the secure short-range wireless network connection. The management controller randomly identifies a port number for the peer-to-peer wireless network connection, and disables network traffic through other ports associated with the peer-to-peer wireless network connection. The management controller also transmits a media access control address, the port number, and a host fingerprint to the mobile device through the secure short-range wireless network connection, and receives an access request from the mobile device on the port number of the peer-to-peer wireless network connection after the mobile device authenticated the media access control address and the host fingerprint Determining whether the mobile device is authentic through a secure shell negotiation based on the received secure shell public key. In response to the determination that the mobile device is authentic identifying a group owner of the peer-to-peer wireless network connection based on a negotiation with the mobile device. After the establishment of the peer-to-peer wireless network connection, the management controller may communicate packets with the mobile device on the port number of the peer-to-peer wireless network connection, where outbound packets are encrypted and inbound packets are decrypted.