Firewall Transparency Control for Secure Network Camera Access
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Solution Overview
Problem
Conventional surveillance camera systems lack sufficient control over access to network camera images, posing safety concerns as they allow unrestricted viewing at any time.
Innovation Solution
An information management system with a firewall and management server that performs authentication and sets connection permissions, using WebRTC for P2P communication and transparency settings to control access to network cameras, ensuring secure and controlled viewing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If authentication is performed by the management server, then user access control is improved, but system complexity increases due to the need for firewall and management server coordination
Solution Approach 1:
The management server acts as an intermediary between the firewall and user terminals, handling authentication and connection permission decisions. The firewall receives connection requests, forwards authentication requests to the management server, and executes the server's permission decisions. This mediator approach improves access control reliability while keeping the firewall itself relatively simple.
Solution Approach 2:
The system divides access control functionality into separate components: the firewall handles connection filtering and packet inspection, while the management server handles authentication and permission management. This segmentation allows each component to specialize in specific tasks, improving overall reliability without requiring every component to be overly complex.
2Reliability
If connection permission conditions are strictly enforced, then security is improved, but ease of operation deteriorates due to restricted access
Solution Approach 1:
The connection permission conditions are made dynamic rather than static. The management server can adjust authentication requirements, connection permissions, and access conditions based on user identity, time of day, device status, and other variables. This dynamic approach maintains high security while adapting to different operational scenarios to improve ease of use.
Solution Approach 2:
The system changes parameters such as authentication methods, connection ports, and permission levels based on the specific request and user context. For example, different authentication strengths may be applied based on the user's security clearance, or connection permissions may vary by time of day or device location, balancing security with operational convenience.
3Productivity
If firewall transparency setting is implemented for P2P communication, then communication efficiency is improved, but control capability worsens as direct peer-to-peer connections bypass firewall inspection
Solution Approach 1:
The firewall performs preliminary authentication and permission verification before establishing P2P transparent connections. The management server authenticates users and approves connection requests before the firewall creates the transparent relay. Once established, the P2P connection operates efficiently without constant firewall intervention, but the initial control actions ensure security and maintainability of control capability.
Data Source
AI summary
The information management system includes a firewall connected to a network camera (i.e., a device) having an image capturing function and a sound collecting function and a management server performing an authentication process for authenticating a user using the user terminal between the management server and the user terminal and allowing the user terminal to connect to the network camera via the firewall. The information management system is configured to acquire, via the firewall, media data including an image captured by the network camera and an audio collected by the network camera from the network camera to which the user terminal is allowed to connect based on a connection permission condition defined in the management server.