IPv6 alias prefix detection method based on fragmentation fingerprints

Abstract

The invention discloses an IPv6 alias prefix detection method based on fragmentation fingerprints. The IPv6 alias prefix detection method comprises the following steps: generating a plurality of pseudo-random addresses in a target prefix space; judging that the target prefix is an active prefix; and judging that the plurality of pseudo-random addresses and the active prefixes are configured on thesame host so as to identify that the active prefixes are alias prefixes. According to the detection method, the network host can be effectively discovered, the network detection cost is reduced, andmore effective data support is provided for network measurement, network surveying and mapping and security research.

Description

technical field [0001] The invention relates to the technical field of IPv6 alias prefix detection, in particular to a fragment fingerprint-based IPv6 alias prefix detection method. Background technique [0002] Alias ​​detection is based on the following experience: under a non-alias prefix, the event that all randomly generated IPv6 addresses are active is a small probability event. The usual method is: first select an address prefix of a specific length, then generate a certain number of IPv6 addresses under the prefix for detection, and perform alias judgment based on the active number of detection addresses. Murdock et al. randomly generated 3 addresses in the space of 96 prefixes, and sent three probe packets to each address. If replies from three random addresses were received, the prefix was determined as an alias prefix. This method only detects prefixes with a length of 96, and the space is limited; at the same time, randomly generated addresses may be distributed...

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Problems solved by technology

However, the proposed fingerprinting technique is an ambiguous and challenging technique, which cannot effectively characterize the characteristics of alias prefixes, and is only a side verification of the detection results.

At the same time, with the advancement of IPv6 address deployment, the smaller the prefix space, each address in the entire prefix space (such as / 124) is assigned to a different host, resulting in the failure of probability-based alias prefix detection; Liu et al. Large-scale alias detection technology in , to avoid unnecessary scanning of the detected alias area and improve discovery efficiency, this method also has the defect of multi-level alias detection algorithm

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