MFP VNC Session Logout on Disconnect to Prevent Unauthorized Access
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Solution Overview
Problem
When a remote operation of an image forming apparatus using VNC is disconnected without logout processing, the user's login state is maintained, posing a security risk as the operation screen remains displayed, allowing unauthorized access.
Innovation Solution
Implementing a method to automatically perform logout processing when the VNC connection is disconnected, ensuring secure termination of the remote operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the image forming apparatus maintains login state during remote operation, then the user can perform operations without relogging, but security is compromised when connection is disconnected without logout
Solution Approach 1:
The system performs logout processing automatically when a disconnection is detected, eliminating the need for manual logout. This preliminary action ensures security is restored before the next connection attempt, resolving the contradiction between maintaining login state for convenience and ensuring security after disconnection.
2Loss of time
If the operation screen remains displayed after disconnection, then the user can quickly resume operations, but unauthorized access becomes possible
Solution Approach 1:
The system automatically clears the operation screen and performs logout when disconnection is detected, before any potential unauthorized access can occur. This preliminary action prevents harmful factors while minimizing time loss by preparing a clean state for the next legitimate user.
Solution Approach 2:
The potential harm of maintaining login state is converted into benefit by implementing automatic logout upon disconnection. The system uses the disconnection event itself as a trigger to restore security, transforming the security risk into a mechanism that automatically prevents unauthorized access.
3Reliability
If manual logout is required before disconnecting VNC connection, then security is maintained, but operation complexity increases
Solution Approach 1:
The system performs logout processing automatically without requiring user intervention. The disconnection detection mechanism triggers the logout sequence autonomously, making the system self-service oriented and eliminating the need for additional manual steps while maintaining security.
Solution Approach 2:
The logout processing is merged with the disconnection handling routine. Instead of being separate operations, the system combines connection termination and logout into a single automated sequence, reducing operational complexity while ensuring security is maintained.
Data Source
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AI summary
There has been such an issue that, when an operation for stopping a Virtual Network Computing (VNC) connection is received from a user on a mobile terminal in a state where the VNC connection is established between the mobile terminal and a multifunction peripheral (MFP) and the user is logged in to the MFP, a screen in a state where the user is logged in is continued to be displayed on the MFP. One aspect of the present disclosure allows processing for logging the user out of the MFP to be automatically performed when processing for disconnecting the VNC connection is received.