Network Interface Unit for Automated VPN Configuration
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Solution Overview
Problem
Existing systems fail to provide reliable and secure connections for mobile users accessing virtual private networks (VPNs) due to complexities in configuring network nodes with dynamic IP addresses and varying connection types, leading to tedious and error-prone setup processes.
Innovation Solution
A network interface unit with a Dynamic Host Configuration Protocol (DHCP) server and a graphical user interface (GUI) for easy configuration, allowing users to establish secure VPN connections by specifying connection types and ISP information, automating login and encryption processes for secure data transfer across public and private networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual configuration methods are used for VPN connections, then configuration flexibility can be achieved, but the setup process becomes tedious and error-prone
Solution Approach 1:
The system performs self-configuration by automatically detecting connection parameters, obtaining IP addresses via DHCP, and establishing VPN connections without requiring manual user input for each parameter. The client machine autonomously completes the configuration process by selecting from stored connection types and automatically filling in network parameters.
Solution Approach 2:
Connection profiles and configuration templates are pre-configured and stored in the system, containing common VPN connection parameters and settings. When a user initiates a connection, the system retrieves and applies these pre-configured profiles, eliminating the need to manually configure each parameter from scratch and significantly reducing setup time.
2Loss of time
If automated configuration is implemented, then setup time is reduced, but reliability of secure connections may be compromised
Solution Approach 1:
The system incorporates feedback mechanisms that monitor the VPN connection establishment process, verifying that all configuration parameters are correctly applied and that the connection is successfully established. The system can detect configuration errors and prompt for correction, ensuring that automated configuration maintains connection reliability.
Solution Approach 2:
A network interface unit acts as an intermediary between the user and the VPN configuration process, managing the automated configuration while ensuring security requirements are met. This intermediary layer validates configuration parameters and coordinates the connection establishment, maintaining both automation efficiency and connection reliability.
3Adaptability or versatility
If multiple connection types are supported, then system versatility increases, but device complexity increases
Solution Approach 1:
The system implements a universal configuration framework that can handle multiple connection types (dial-up, broadband, wireless, etc.) through a single interface. The network interface unit and client machine are designed to work with various connection protocols and network configurations, providing multi-functional capability without requiring separate configuration systems for each connection type.
Solution Approach 2:
The configuration system is segmented into distinct modules: connection type selection, parameter configuration, profile storage, and connection management. Each module handles specific aspects of the configuration process independently, reducing overall system complexity while maintaining the ability to support multiple connection types through modular architecture.
Data Source
AI summary
A network interface unit is provided for use intermediate a LAN and a public or private network, or a combination of both, for establishing secure links to a VPN gateway. Login by a LAN client with the network interface unit, addressing, authentication, and other configuration operations achieved using a web page-based GUI are applied in establishing tunnels from LAN clients to desired VPN destinations. Illustrative network interface units include a DHCP server and provide encryption-decryption and encapsulation-decapsulation of data packets for communication with VPN nodes. Configuration and connection of a client are further enhanced by a built-in DNS server and other functional servers to provide a high degree of autonomy in establishing connections to a desired VPN gateway via an ISP or other public and/or private network links to. The interface unit then performs required authentication exchanges, and required encryption key exchanges.