一种检测NAT后主机数目的方案

A Scheme for Counting NATted Hosts

首先介绍了利用NAT技术实现共享接入上网的原理以及对NAT后的用户进行识别和精确定位的重要意义,然后在此基础上提出了一种新的数据源追踪技术。通过被动获取的方式来获取NAT下不同用户和同一知名网站交互的HTTP数据包中的Cookie ID,如果同一个IP地址与该网站有多个Cookie ID,则Cookie ID的数目就是通过该IP共享上网的主机个数,并可以通过该Cookie ID对用户进行精确识别。该种方案具有更高的准确性和稳定性。

The paper introduces the theory of connecting to the Jnternet by means of NAT boxes and great importance of detecting NATs. And then presents a new scheme of detecting that registering the hosts＇ Cookie ID when they located to a famous website. If any of these Internet addresses had more than one Cookie ID of the same website, then the hum of the Cookie ID is just the same with the hum of hosts under the Internet address. Compared with other techniques, the new scheme has the properties of more exactness and stability.