Network Security Policy Compliance Verification System
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Solution Overview
Problem
Verifying compliance with security policies in complex networks is challenging due to the need for compatibility across multiple devices using different configuration formats and protocols, and the 'hit or miss' process often results in inefficiencies and inconsistencies in transit configurations.
Innovation Solution
A method and system that determine all transit services each device is expected to provide, compare these to the actual transit configuration, and identify any security inconsistencies or violations by processing defined transit policies and comparing them to the current device configurations, using flow diagrams to illustrate the process and generate reports on compliance and violations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a security analyst manually reviews configuration settings and performs hit-or-miss testing, then some security loopholes may be identified, but the process is inefficient, inconsistent, and cannot comprehensively verify all security policies
Solution Approach 1:
The system performs self-verification by automatically comparing actual device configurations against intended security policies without requiring manual analyst intervention for each check. The compliance verification system autonomously identifies configuration deviations and generates reports, eliminating the inefficient manual hit-or-miss testing approach while maintaining high verification accuracy
Solution Approach 2:
The patent replaces manual mechanical processes (analyst review and testing) with automated electronic systems that systematically compare configuration data against policy definitions. This substitution enables comprehensive verification of all security policies across multiple devices simultaneously, dramatically improving both efficiency and consistency
2Adaptability or versatility
If multiple devices are configured to enforce security policies using different vendor-dependent formats and protocols, then security policies can be implemented across diverse network equipment, but the complexity of verifying compliance increases significantly
Solution Approach 1:
The system introduces an intermediary compliance verification layer that translates various vendor-specific configuration formats into a unified policy representation. This intermediary mechanism abstracts the complexity of different configuration schemes, allowing the system to verify security policy compliance across multi-vendor environments without requiring analysts to understand each vendor's specific configuration syntax
Solution Approach 2:
The verification system is designed with universal capabilities to handle multiple vendor configurations through a single unified interface. It can extract and compare security policy parameters from different configuration formats (Cisco ACLs, Juniper firewall rules, etc.) using the same verification logic, eliminating the need for separate verification processes for each vendor
3Adaptability or versatility
If dynamic configuration features like Application Layer Packet Inspection are enabled, then security policies can be enforced based on application behavior, but the state-dependent nature of these configurations makes comprehensive testing extremely difficult
Solution Approach 1:
The system performs preliminary analysis of state-dependent configurations by identifying all possible states and transitions before verification. It pre-determines the expected behavior for each state combination and verifies that the device configuration correctly implements these transitions, eliminating the need for complex manual test sequences that would otherwise be required to cover all state-dependent scenarios
Data Source
AI summary
All of the transit services that each device is expected to provide are determined and contrasted with the transit configuration of each device. Because the transit configuration of each device may be state-dependent, the service items within each application service are processed in sequential order. Sequences of service items are associated with connection groups, and each of the routes associated with each connection group is determined based on the sequential order of the service items. The configuration of each device along each route is processed to determine the services that will be permitted or denied, based on its current configuration. Each desired transit service item is compared to the transit configuration provided by each device to identify any inconsistencies and/or violations.