TWC: Medium: Collaborative: Measurement and Analysis Techniques for Internet Freedom on IP and Social Networks

该项目使用新的测量技术研究互联网审查，范围从互联网协议(IP)网络上的低级数据包过滤到对社交媒体内容的高级审查。总的来说，这些技术可以提供对审查动态的更好的情景感知。该项目专注于一套高级推理技术，用于何时？直接观察？是不可用或不切实际的，例如，用于基于每跳最大传输单元(MTU)推断技术来检测IP隧道的方法，以便推断给定IP网络的物理特征，以及例如，对社交媒体发布的密文和密文速度的测量。这项研究对提供对网络上的信息和内容的限制性控制的意识的方法的研究具有广泛的影响，这将是软件开发人员、系统管理员和政策制定者的兴趣所在。

This project studies Internet censorship using novel measurement techniques, ranging from low-level packet filtering on Internet Protocol (IP) networks to high-level censorship of social media content. Collectively these techniques can provide greater situational awareness of censorship dynamics. The project focuses on a suite of advanced inference techniques for when ?direct observation? is unavailable or impractical such as, for example, methods for detecting IP tunnels based on per-hop Maximum Transmission Unit (MTU) inference techniques in order to reason about the physical characteristics of a given IP network and, for example, measurement on social media postings of redactions and the speed of redactions. This research has broad implications on studies of methods to provide awareness of restrictive control of information and content on networks, which would be of interest to software developers, system administrators, and policy makers alike.