Adaptive Security Policies for Core Network Domain Messaging
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Solution Overview
Problem
Ensuring secure communication between different core network domains in a wireless communication system is complicated by the need for inter-network exchanges and evolving communication formats, which poses challenges in maintaining security while minimizing administrative and operational overhead.
Innovation Solution
Implementing a security policy that dynamically indicates which message portions are to be secured by inter-domain security measures, allowing proxies to adapt to formatting changes without manual configuration updates, using regular expressions or JSON Pointers to identify specific message fields for anti-spoofing and other security measures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If security policies are manually configured to match evolving message formats, then security measures can be maintained, but administrative and operational overhead increases significantly
Solution Approach 1:
The system enables self-service by automatically discovering and adapting to message format changes through runtime inspection. Security policies are dynamically updated based on observed message structures without requiring manual reconfiguration, allowing the system to maintain security effectiveness while eliminating administrative overhead associated with manual policy updates
Solution Approach 2:
The security system transitions from static manual configuration to dynamic adaptive policies. Message formats are inspected at runtime, and security policies are automatically adjusted to match evolving formats. This dynamic approach ensures security measures remain effective against spoofing attempts while adapting seamlessly to network changes without human intervention
2Reliability
If security measures inspect all message portions, then comprehensive security is achieved, but processing complexity and overhead increase
Solution Approach 1:
The system applies local quality by selectively inspecting only specific portions of messages that are relevant to security concerns. Rather than uniformly processing entire messages, the system identifies and focuses on critical fields such as routing information and identifiers, reducing processing complexity while maintaining comprehensive security coverage for security-critical elements
Solution Approach 2:
The message structure is segmented into distinct portions, with security measures applied selectively to specific segments. The system divides messages into relevant and irrelevant portions for security inspection, applying complex security logic only where necessary while bypassing non-critical sections, thereby reducing overall processing complexity
3Adaptability or versatility
If message formats evolve to support new network functions, then network capability is enhanced, but existing security measures become obsolete
Solution Approach 1:
The security system dynamically adapts to evolving message formats through runtime inspection and automatic policy updates. When new network functions introduce format changes, the system automatically discovers the new structures and adjusts security measures accordingly, ensuring security validity is maintained alongside network capability enhancement
Solution Approach 2:
The system implements feedback mechanisms by continuously monitoring message formats and using this information to automatically update security policies. This closed-loop approach ensures that as message formats evolve to support new network functions, security measures receive feedback about the changes and automatically adjust to remain valid and effective
Data Source
AI summary
Network equipment (300) is configured as a proxy (40, 50) for one of multiple different core network domains of a wireless communication system (10). The network equipment (300, 400) is configured to receive a message (60) that has been, or is to be, transmitted between the different core network domains. The network equipment (300, 400) is further configured to perform inter-domain security measures according to a security policy (80). The security policy (80) may indicate which one or more portions of (e.g., the content of a field in) the message (60) are to be used by inter-domain security measures (e.g., inter-domain anti-spoofing measures) and/or which types of messages are to be used by the inter-domain security measures.