Network Controller APT Mitigation via Management Plane Analysis
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Solution Overview
Problem
Advanced persistent threats (APTs) in computer networking systems evade traditional detection methods, compromising network integrity by installing malware, creating backdoors, and exfiltrating sensitive information, as they remain hidden and undetected for extended periods.
Innovation Solution
A centralized network controller detects APTs by analyzing management plane information from network devices, determining configuration changes, and executes mitigation actions such as password resets, isolating infected devices, rolling back corrupted images, and initiating alarm signals to minimize vulnerability and prevent unauthorized access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional threat detection methods are used, then detection simplicity is maintained, but APTs remain undetected for extended periods compromising network integrity
Solution Approach 1:
The system performs preliminary actions by continuously monitoring and analyzing management plane information before APTs can cause significant damage. The network controller proactively detects configuration changes and threat indicators, executing mitigation actions before the threat can compromise network integrity, thus resolving the contradiction between maintaining detection simplicity and improving reliability
Solution Approach 2:
The network controller acts as an intermediary between network devices and security analysis systems. It collects management plane information from multiple devices, analyzes for APT indicators, and coordinates mitigation actions across the network. This intermediary approach enhances detection capability without requiring complex changes at each individual device, maintaining operational simplicity while improving reliability
2Object-affected harmful factors
If APTs remain hidden in the network, then attacker access is maintained, but network security is compromised through malware installation and backdoor creation
Solution Approach 1:
The system implements continuous feedback loops where the network controller monitors management plane information, detects configuration changes indicating APT presence, and executes mitigation actions. The system continuously verifies the effectiveness of mitigation actions by monitoring for residual threats, providing feedback that reduces network vulnerability while preserving security information integrity through automated response protocols
3Loss of time
If mitigation actions are executed rapidly, then response time is reduced, but network operation disruption increases
Solution Approach 1:
The system dynamically adjusts mitigation actions based on the specific threat detected and the criticality of affected network devices. For non-critical devices, more aggressive mitigation is applied immediately. For critical infrastructure, the system selects mitigation actions that minimize operational disruption while still addressing the threat, achieving rapid response without excessive network disruption through dynamic decision-making
Data Source
AI summary
A method is presented in which a system reduces the risk of an advanced persistent threat (“APT”) detected at one or more network devices by implementing one or more mitigation actions depending on the nature of the detected threat. Accordingly, in response to detecting the risk of an APT at one or more network devices, a centralized controller implements one or more mitigation actions to minimize the vulnerability of an enterprise network to unauthorized access to one or more network resources. A centralized controller may therefore instruct one or more network devices to take appropriate mitigation actions depending on the nature of an APT detected on one or more network devices.