Method, system and apparatus for detecting sharing access terminal quantity

Abstract

The embodiment of the invention discloses a method, a system and a device for detecting the number of shared access terminals. The method comprises the following steps: receiving a network data packet which comprises first system time of the terminals and is sent by a terminal under a public network IP, and determining the number of the terminals under the public network IP according to the difference value quantity of the different first system times and a local second system time under the public network IP. The invention determines the number of the terminals under the public network IP according to the difference value quantity of the different first system times and the local second system time, thereby realizing the statistics of the number of shared access terminals under the public network IP and increasing the number accuracy of shared access hosts.

Description

technical field [0001] The present invention relates to the field of communication technologies, in particular to a method, system and device for detecting the number of shared access terminals. Background technique [0002] With the continuous increase of the number of Internet users, global IP address resources are becoming more and more scarce, and the problem of lack of IP address resources is solved by using Network Address Translation (NAT for short). see figure 1 , is a schematic diagram of a network structure with network address translation NAT in the prior art. Among them, NAT10 is connected to host 1, host 2 and host 3, so that NAT 10, host 1, host 2 and host 3 form a subnet. The host 1, host 2, and host 3 use a subnet with private addresses to access the Internet through NAT 10, wherein the NAT 10 is configured with a globally valid address G (that is, a public network IP address), and the hosts in the subnet 1. Host 2 and host 3 use private addresses. NAT 10...

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Problems solved by technology

[0004] In the process of realizing the present invention, the inventor found that in the prior art, NAT 10 can alleviate the problem of the shortage of Internet IP addresses, but this NAT 10 allows host 1, host 2 and host 3 to access the Internet, but it appears as a single Ordinary hosts, the characteristics of NAT make it difficult to observe the host information sharing access to the NAT in the data packets passing through the NAT, and the number of hosts sharing access to the NAT (that is, the number of access hosts accessing the Internet through the NAT 10) Statistics are difficult

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