Firewall Learning Mode for Automated Vulnerability-Based Configuration

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Solution Overview

Problem

Configuring firewalls, particularly web application firewalls, is cumbersome and resource-intensive, leading to inefficient use of computing resources and network bandwidth, and can result in either unnecessary security vulnerabilities or excessive security measures, complicating network security management.

Innovation Solution

A learning mode is introduced in firewalls or application delivery controllers, where a packet engine intercepts client requests, injects attack payloads to test for vulnerabilities, and generates configuration profiles to enable or disable security checks based on actual server vulnerabilities, allowing for automated and optimized firewall configuration.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If security protections are enabled in firewall configuration, then network security is improved, but computing resources and network bandwidth are wasted, and performance decreases

Engineering Contradiction:
Improvenetwork securityVSAvoidfirewall performance
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The system performs preliminary vulnerability scanning and learning during a learning mode phase before full production deployment. This preliminary action identifies which security protections are actually needed, allowing the firewall to enable only those specific protections rather than enabling all available security features by default, thus avoiding unnecessary resource consumption while maintaining adequate security.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system applies different security configurations to different parts of the network traffic based on learned vulnerability patterns. Instead of applying uniform security protections to all traffic, the firewall learns which specific security checks are needed for specific application patterns and applies them locally, optimizing resource usage by enabling security only where actually required.

Inventive Principle:
Principle #3Local quality

2Manufacturing precision

If manual firewall configuration is performed by administrators, then security policy accuracy is improved, but time and effort consumption increase

Engineering Contradiction:
Improvesecurity policy accuracyVSAvoidconfiguration time
Core Design Contradiction:
Manufacturing precisionVSLoss of time

Solution Approach 1:

The firewall system performs self-configuration through automated learning mode. During this phase, the system automatically scans the network, identifies vulnerabilities, and generates optimized security configuration profiles without requiring manual administrator input. This self-service approach maintains high accuracy by using systematic scanning methods while dramatically reducing the time and effort required compared to manual configuration.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The system uses feedback from automated vulnerability scanning and traffic analysis to continuously refine and optimize security configuration profiles. The learning mode collects data about actual network traffic patterns and vulnerability exposures, then uses this feedback to automatically adjust security settings, achieving both high accuracy and efficiency without manual intervention.

Inventive Principle:
Principle #23Feedback

3Manufacturing precision

If staging environment testing is performed before production deployment, then security configuration accuracy is improved, but deployment time is extended

Engineering Contradiction:
Improveconfiguration accuracyVSAvoiddeployment time
Core Design Contradiction:
Manufacturing precisionVSLoss of time

Solution Approach 1:

The system merges the learning/testing phase with the production deployment process. Instead of requiring separate staging environment testing followed by production deployment, the learning mode can be executed directly in the production environment with minimal disruption. The security configuration is learned and optimized in-place, allowing the system to achieve accurate configuration without the time penalty of extended staging and separate deployment phases.

Inventive Principle:
Principle #5Merging (Combining)

Data Source

PatentUS11683291B2Automatically generating firewall configuration profiles using learning mode
Publication Date: 2023.06.20 CITRIX SYSTEMS INC
  • US11683291B2 patent drawing
  • US11683291B2 patent drawing
  • US11683291B2 patent drawing

AI summary

Described embodiments provide systems and methods for generating firewall configuration profiles for firewalls. An intermediary device may modify a request from a client to access the server to include a payload provided by the device. The payload may include an action type selected from a plurality of action types used to probe the server for a corresponding security vulnerability of a plurality of security vulnerabilities. The device may transmit, to the server, the request including the payload to cause the server to provide a response to the device. The device may determine that the server is susceptible to a security vulnerability of the plurality of security vulnerabilities corresponding to the action type based at least on the response. The device may generate a configuration profile for the firewall to restrict requests of the action type to access the server from clients.