Proxy Device for Policy-Based Printing Across Domains
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Solution Overview
Problem
Existing policy-based printing systems are limited to closed private domain environments, preventing users from accessing printing data outside the office, particularly for on-the-go professionals who need to print in public locations where these systems are not supported.
Innovation Solution
A system that includes a private server storing documents and policies, interacting with a proxy printing device via a public server to manage and apply printing policies across multiple printing devices, allowing users to access and print documents securely in public locations by authenticating and enforcing policies through a public domain network.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If policy-based printing systems operate within a closed private domain environment, then security and policy control are maintained, but users cannot access printing data outside the office environment
Solution Approach 1:
A proxy device is introduced as an intermediary component that bridges the private domain printing system and public domain printing devices. The proxy device receives print jobs from users, applies policy-based access control, and forwards authorized jobs to public printing devices, thereby enabling external access while maintaining security and policy enforcement
Solution Approach 2:
The printing system is segmented into distinct components: a private domain server for policy management, a proxy device for job processing and policy application, and public domain printing devices for actual printing. This segmentation allows the system to maintain secure policy control in the private domain while enabling flexible access through the proxy to public devices
2Ease of operation
If users access printing services in public locations, then mobility and flexibility are improved, but reliable access to printing data and policy support cannot be guaranteed
Solution Approach 1:
The system performs preliminary actions by pre-configuring the proxy device with policy rules and authentication mechanisms before users attempt to print in public locations. The proxy device is pre-established as a trusted intermediary that can validate user credentials and apply policies without requiring connection to the private domain during the printing operation
Solution Approach 2:
The proxy device serves as a mediator that caches policy information and authentication data, allowing users to access printing services in public locations without direct connection to the private domain. The proxy device reliably enforces policies locally, ensuring data access reliability even when users are outside the office environment
Data Source
AI summary
A policy-based printing system is implemented to allow access to a private domain to print using a public domain. The private domain includes private servers that store documents. The public domain includes servers and a printing device. A public policy server uses a domain list and a protocol connection with a private authentication server to validate a user and identify which private domain to access. The public policy server receives requests from the printing device to process a print job of a document in the private domain. A proxy printing device is created to manage a plurality of printing devices and communicate with the public policy server. The proxy printing device corresponds to a condition within the printing devices.