Dynamic Content-Based Routing for Bandwidth and Security Trade-Offs
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Solution Overview
Problem
Traditional network traffic routing methods, such as always-on VPN and fixed split tunneling, consume excessive corporate bandwidth and lack the ability to securely manage traffic based on content, leading to inefficient use of resources and potential security vulnerabilities.
Innovation Solution
Dynamic content-based routing system that uses a policy server and database to inspect URL requests and redirect network traffic dynamically based on content inspection and network participation mechanisms, allowing traffic to be routed through VPN tunnels or other interfaces as needed, thereby conserving bandwidth and enhancing security.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all network traffic is routed through VPN (always-on VPN), then security is improved, but bandwidth consumption increases and resource efficiency deteriorates
Solution Approach 1:
The patent segments network traffic into different categories based on content inspection results. Traffic is divided into secure traffic (routed through VPN) and non-secure traffic (routed through non-VPN interfaces). This segmentation allows selective routing that maintains security for necessary traffic while conserving bandwidth for non-critical traffic.
Solution Approach 2:
The system dynamically adjusts routing decisions based on real-time content inspection of URL requests. Rather than using static always-on VPN routing, the system evaluates each traffic flow's security requirements and dynamically routes it through appropriate interfaces, optimizing both security and bandwidth utilization.
2Ease of operation
If traditional IP address routing is used, then routing simplicity is maintained, but content-based security control is lost
Solution Approach 1:
The patent introduces a content inspection mechanism as an intermediary between traditional IP routing and security control. This intermediary inspects URL requests and provides routing decisions based on content analysis, enabling fine-grained security control while maintaining the underlying IP routing infrastructure.
Solution Approach 2:
The system changes the routing decision parameter from simple IP address matching to content-based evaluation. By inspecting URL requests and analyzing traffic content, the system makes routing decisions based on security requirements rather than just destination addresses, enhancing adaptability while preserving routing functionality.
3Loss of energy
If fixed split tunneling is implemented, then bandwidth efficiency is improved, but security control based on content is reduced
Solution Approach 1:
The patent transforms fixed split tunneling into dynamic content-based routing. Instead of pre-configuring static split tunneling rules, the system dynamically inspects each URL request's content and security requirements, then routes traffic accordingly. This maintains bandwidth efficiency while enhancing security control through real-time content analysis.
Data Source
AI summary
Systems and methods for redirecting network traffic include a policy server configured to be in communication with a policy database and a client disposed on a remote device. The policy server is configured to receive an inquiry from the client regarding a universal resource locator (URL) request and, based on a policy obtained from the policy database, cause the client to control the remote device such that network traffic associated with the URL request is routed (tunneled) via a particular interface, e.g., a virtual private network (VPN) connection, when so required by the policy, and network traffic associated with the URL request is routed over a different VPN connection or a non-VPN connection when so required by the policy.