Port scanning method and device, electronic equipment and storage medium

The mapping relationship established by LFSR and FPE solves the problems of insufficient randomness and low efficiency in existing port scanning technologies, realizes efficient and random port scanning task management, and reduces bandwidth consumption and interception risks.

CN115640105BActive Publication Date: 2026-07-24QI AN XIN TECHNOLOGY GROUP INC +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
QI AN XIN TECHNOLOGY GROUP INC
Filing Date
2021-07-19
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

Existing Internet port scanning technologies suffer from insufficient randomness in scanning target IP addresses, lack effective task progress management, low computational efficiency, and high bandwidth consumption.

Method used

A pseudo-random sequence is generated using a linear feedback shift register (LFSR), and a mapping relationship with the scanning target is established through a format-preserving encryption algorithm (FPE). The set of scanning targets is determined using task metadata and actual parameters, thereby improving the randomness and computational efficiency of the scan.

Benefits of technology

It improves the randomness of port scanning tasks, reduces the risk of being intercepted, enhances computation and transmission efficiency, reduces bandwidth consumption, and improves execution efficiency.

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Abstract

Embodiments of the present application provide a port scanning method and device, electronic equipment and storage medium. The port scanning method comprises: sending a port scanning task request to a scheduling node; receiving task element information and task actual parameters fed back by the scheduling node, wherein the scheduling node has previously constructed an LFSR based on a plurality of scanning targets in scanning information, a plurality of pseudo-random sequences generated by the LFSR have a one-to-one mapping relationship with the plurality of scanning targets, the task element information is used to restore the LFSR, and the task actual parameters include a current state of the LFSR; determining a scanning target set based on the task element information and the task actual parameters, the scanning target set comprising at least one scanning target. Embodiments of the present application can improve the randomness of the distribution of an Internet port scanning task, reduce the risk of scanning behavior being intercepted, and also improve the calculation and transmission efficiency of scanning targets, having the advantage of high execution efficiency of port scanning.
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