Context-Based Outbound Application Firewall for Web Security
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Web applications face security threats due to their large size and complexity, making it difficult to detect vulnerabilities with traditional security measures, necessitating a more advanced approach for outbound traffic processing.
Innovation Solution
Implementing context-based outbound processing application firewalls that use context data to filter and mark data for trustworthiness, preventing execution of untrusted user input by encoding and decoding data, and utilizing a side channel monitoring system to actively monitor and enforce safety rules.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional security measures are used to protect web applications, then the application can maintain its existing architecture, but security vulnerabilities cannot be effectively detected due to the large size and complexity of web applications
Solution Approach 1:
The patent divides the security protection function into separate modules: an application firewall entity that operates independently from the web application, with distinct components for marking incoming data, generating context information, encoding responses, and monitoring side channels. This segmentation allows security processing to be applied to complex applications without increasing their internal complexity.
Solution Approach 2:
The application firewall entity acts as an intermediary between the web application and the network. It receives requests, processes them through multiple security stages (marking, context generation, encoding), and returns responses after security verification. This intermediary approach enables effective security detection without requiring changes to the application's complex internal structure.
2Reliability
If a separate web application firewall system is implemented to evaluate entire application behavior, then security coverage is improved, but system complexity and processing overhead increase
Solution Approach 1:
The patent implements preliminary security actions at the beginning of the request processing cycle. The firewall marks incoming data with trust indicators before the application processes it, and generates context information about the request in advance. This preliminary marking and context generation enable efficient security evaluation without requiring complex real-time analysis of the entire application behavior.
Solution Approach 2:
The patent adds a new dimension to security processing by introducing context information that captures the state and characteristics of requests and responses. This contextual dimension allows the firewall to make security decisions based on the specific situation rather than requiring complex analysis of all possible application behaviors, simplifying the firewall system while maintaining comprehensive coverage.
3Reliability
If context-based outbound processing with encoding and decoding is implemented, then untrusted user input is prevented from execution, but processing time and computational resources increase
Solution Approach 1:
The patent performs encoding of context information and user input markers in advance, during the request processing phase, rather than waiting until response generation. This preliminary encoding ensures that when responses are generated, the security processing is already complete or can be quickly verified, reducing the time penalty of encoding and decoding operations.
Solution Approach 2:
The firewall monitors the encoding and decoding process through side channel monitoring, receiving feedback about the state of data processing. This feedback mechanism allows the system to adjust processing intensity dynamically, ensuring execution safety while minimizing unnecessary processing time for already-safe data paths.
Data Source
AI summary
Outbound processing with application firewalls. An outbound message is generated with an application. The outbound message includes at least a trustworthiness indicator and/or marking information for the one or more portions of the outbound message. The outbound message is received by an application firewall. The outbound message is analyzed based on the trustworthiness indicator and/or marking information, and context information. An action is performed on the outbound message based on the trustworthiness indicator and/or marking information, and the context information.