Multifunction Printer Wi-Fi Filtering for Secure Access
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Solution Overview
Problem
Image forming apparatuses face challenges in connecting to wireless LAN access points outside the company network, where security may be compromised, leading to potential information leakage, while restricting connections impairs convenience.
Innovation Solution
The image forming apparatus allows administrators to set authentication types for wireless connections, enabling selective connection with secure access points and restricting connections to those with low security, using a processor to manage and control the connection process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the image forming apparatus connects to any wireless LAN access point, then convenience is improved, but security deteriorates due to potential information leakage
Solution Approach 1:
The patent changes the parameter of authentication type selection, allowing the image forming apparatus to choose from multiple authentication methods (open authentication, shared key, WPA, WPA2, WPA3) based on the security requirements of different wireless LAN environments. This enables the system to adapt to various network conditions while maintaining security awareness.
Solution Approach 2:
The patent introduces dynamic control where the authentication type can be changed based on the operational state. When the apparatus detects it is operating outside the company network, it dynamically restricts the available authentication types to only secure options, thereby adapting the security level to the current environment without permanently sacrificing convenience.
2Object-affected harmful factors
If the image forming apparatus restricts connection to wireless LAN access points with low security, then security is improved, but convenience deteriorates
Solution Approach 1:
The patent implements dynamic restriction based on operational context. The apparatus automatically detects whether it is operating inside or outside the company network and adjusts the connection restrictions accordingly. When outside the company network, secure authentication types are required; when inside, all authentication types are permitted, thus maintaining convenience where appropriate while ensuring security when needed.
Solution Approach 2:
The patent employs feedback mechanisms where the apparatus monitors its operational environment and uses this information to adjust authentication requirements. The system receives feedback about the network environment and automatically modifies the available authentication types, creating a closed-loop security system that adapts to changing conditions.
3Object-affected harmful factors
If the image forming apparatus provides authentication type settings, then security control is improved, but device complexity increases
Solution Approach 1:
The patent implements self-service functionality where the image forming apparatus automatically detects its operational environment and configures appropriate authentication settings without requiring manual administrator intervention. The system autonomously determines whether to restrict authentication types based on whether it is operating inside or outside the company network, reducing the need for complex manual configuration while maintaining strong security control.
Data Source
Figure 1
Figure 2A~2B
Figure 3
AI summary
The MFP 1 is configured to receive instructions regarding image formation through wireless LAN communication via an access point that has established a connection with the wireless LAN-IF 141. While accepting login from the administrator, the CPU 11 accepts settings as to whether or not to establish a connection for each authentication method via the authentication method setting screen. In response to receiving an instruction to establish a connection with an access point, the CPU 11 searches for an access point, receives a selection of one of the access points that can be selected from among the searched access points, and selects the selected access point. Establish a connection with a point. Among the searched access points, the CPU 11 sets an access point, for which an authentication method set to establish a connection is selected on the setting screen, to be selectable.