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VistaScan: Optimizing Internet-Wide Scanning Through Visibility-Aware Distributed Task Allocation.
Luolin Hu1, Fan Shi1, Yi Shen1
1College of Electronic Engineering, National University of Defense Technology, Hefei 230031, China.
Sensors (Basel, Switzerland)
|March 14, 2026
Summary
VistaScan enhances internet scanning by using node visibility awareness for efficient, scalable network measurement. This novel distributed system achieves near-optimal coverage with reduced probe volume and faster completion times.
Area of Science:
- Computer Science
- Network Security
- Distributed Systems
Background:
- Internet scanning is crucial for security and network measurement but faces visibility limitations.
- Centralized scanners have single points of failure, while naive distributed methods are inefficient.
Purpose of the Study:
- To introduce VistaScan, a novel distributed scanning system.
- To leverage node visibility awareness for efficient and scalable Internet-wide scanning.
- To address visibility heterogeneity in global networks.
Main Methods:
- Developed VistaScan, a distributed system utilizing node visibility awareness.
- Constructed a Visibility Matrix via efficient anchor probing.
- Implemented a load-aware task allocation mechanism for intelligent block assignment and filtering.
Main Results:
- VistaScan outperformed five baseline methods in global, regional, and Special-Block tasks.
- Achieved near-optimal coverage (97.58%-99.05%) with 64-93% less probe volume.
- Reduced completion time by 13-19× and demonstrated cross-port generalizability.
Conclusions:
- VistaScan offers a highly efficient solution for Internet-scale distributed measurement.
- Established a theoretical foundation based on visibility consistency for intelligent scanning.
- Advanced scanning practices towards intelligent, low-overhead, and sustainable methods.
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