NAT (Network Address Translation) host number detection method based on IPID and probability statistics model
A probability and statistical model and detection method technology, applied in the network field, can solve problems such as difficulty in meeting demand, changes, misjudgment or multiple detection, etc., and achieve the effect of high accuracy and stable detection accuracy.
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[0022] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the present invention will be further described below through specific embodiments and accompanying drawings.
[0023] The invention proposes a method for detecting the number of NAT hosts based on IPID and probability statistics model. Solved some deficiencies in the IPID detection method and improved the accuracy rate. In the IPID detection method, due to packet retransmission, the impact of the reverse order makes the monitoring time length unsuitable for determination. Therefore, the present invention divides the data packets in a period of time into n time sections on average and processes them. The IPID method is used in the section to obtain the IPID sequence set, and then the number of cross-sequences is calculated for the IPID sequence sets of each two adjacent time periods, and finally the total number of hosts behind the NAT is calculated as a...
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