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AALLA: Attack-Aware Logical Link Assignment Cost-Minimization Model for Protecting Software-Defined Networks against

Sameer Ali^1,2, Saw Chin Tan¹, Ching Kwang Lee³

¹Faculty of Computing & Informatics (FCI), Multimedia University (MMU), Cyberjaya 63100, Malaysia.

Sensors (Basel, Switzerland)

|November 14, 2023

Summary

This summary is machine-generated.

This study introduces an attack-aware logical link assignment (AALLA) model to enhance Software-Defined Networking (SDN) resilience. The model restores network availability by assigning logical links to backup controllers, mitigating single points of failure.

Keywords:

AALLA ILP controller distributed denial of service internet of things software-defined networks

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Area of Science:

Computer Science
Network Engineering
Cybersecurity

Background:

Software-Defined Networking (SDN) centralizes control, offering a global network view but creating a single point of failure.
SDN controllers are vulnerable to hardware/software failures and external threats like Distributed Denial of Service (DDoS) attacks.
Failures can disrupt Industrial Internet of Things (IIoT) services reliant on SDN.

Purpose of the Study:

To propose a novel mathematical model for enhancing SDN resilience.
To address the vulnerability of SDN controllers to failures and attacks.
To restore network availability by re-establishing logical links to backup controllers.

Main Methods:

Development of an attack-aware logical link assignment (AALLA) mathematical model.
Formulation of the AALLA model using Integer Linear Programming (ILP).
Simultaneous optimization of costs for controllers, links, and switches for logical link assignment.

Main Results:

The AALLA model effectively restores disrupted SDN network availability.
It provides a method for assigning logical links from switches to cluster (backup) controllers.
The model determines optimal costs considering controllers, links, and switches.

Conclusions:

The proposed AALLA model enhances SDN robustness against controller failures and attacks.
Logical link assignment to backup controllers is a viable strategy for SDN network restoration.
The ILP formulation offers an efficient approach to optimize network recovery costs.