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Updated: Nov 10, 2025

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FLEX-IoT: Secure and Resource-Efficient Network Boot System for Flexible-IoT Platform.

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  • 1Department of Computer and Information Security, and Convergence Engineering for Intelligent Drone, Sejong University, Seoul 05006, Korea.

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Summary
This summary is machine-generated.

FLEX-IoT enhances Internet of Things (IoT) platforms by securing the trivial file transfer protocol (TFTP) and optimizing system image transfers, reducing server load and improving attack resistance for dynamic IoT device roles.

Keywords:
attacker deceptionflexible IoTresource-efficient network bootsecure TFTP

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Area of Science:

  • Computer Science
  • Network Security
  • Internet of Things

Background:

  • Dynamic system image changes are crucial for diverse roles in large-scale Internet of Things (IoT) platforms.
  • Traditional trivial file transfer protocol (TFTP) for network booting poses security risks and server overload issues.
  • High network overhead occurs due to numerous IoT devices requesting system images for role variations.

Purpose of the Study:

  • To propose FLEX-IoT, a system designed to address security vulnerabilities and server load in IoT platforms.
  • To enable flexible operation and secure system image transfers for IoT devices with varying roles.
  • To enhance the security and efficiency of network booting in dynamic IoT environments.

Main Methods:

  • Developed FLEX-IoT orchestrator utilizing an IoT platform operation schedule for flexible device management.
  • Implemented a secure TFTP service with file access control and attacker deception techniques.
  • Introduced an adaptive transfer method for resource-efficient file transfer and streamlined server performance.

Main Results:

  • FLEX-IoT significantly increases the attack resistance of TFTP with minimal overhead.
  • The proposed system reduces the volume of transferred system images on the server by an average of 27%.
  • Adaptive transfer method minimizes response time for network boot requests.

Conclusions:

  • FLEX-IoT provides a secure and efficient solution for dynamic system image management in IoT platforms.
  • The system enhances TFTP security, making it suitable for flexible IoT environments.
  • FLEX-IoT effectively reduces server network overhead and improves overall system performance.