Even Censors Have a Backup: Examining China's Double HTTPS Censorship Middleboxes

Even Censors Have a Backup: Examining China's Double HTTPS Censorship Middleboxes
复制标题

即使是审查机构也有备份:检查中国的双重 HTTPS 审查中间盒

DOI:
10.1145/3473604.3474559
复制
发表时间:
2021
期刊:
Workshop on Free and Open Communications on the Internet (WOOT
影响因子:
--
通讯作者:
Levin, Dave
Levin, Dave
中科院分区:
--
文献类型:
--
作者:
Bock, Kevin;Naval, Gabriel;Reese, Kyle;Levin, Dave

文献摘要

参考文献

被引文献

相似文献

中国防火长城(GFW)长期以来一直审查HTTPS(通过服务器名称指示字段,或SNI)。人们已经研究了它的机制,近年来发现了各种逃避策略。在本文中,我们有证据表明GFW已经部署了第二个与第一个并行运行的HTTPS审查中间盒。我们对这个二级审查中间盒进行了详细的分析--它是如何运作的,它阻止的内容,以及它如何与主要中间盒互动--并提供证据表明它至少自2019年9月以来一直在运作。我们还提出了几个基于数据包的规避策略,二级中间盒,并证明了初级审查中间盒可以击败独立于二级。我们的代码是公开的。
The Great Firewall of China (GFW) has long censored HTTPS (via the Server Name Indication field, or SNI). Its mechanism for doing so has been studied, with various evasion strategies discovered in recent years. In this paper, we have evidence that suggests the GFW has deployed a second HTTPS censorship middlebox that runs in parallel to the first. We present a detailed analysis of this secondary censorship middlebox---how it operates, the content it blocks, and how it interacts with the primary middlebox---and present evidence that this has been in operation since at least September 2019. We also present several packet-based evasion strategies for the secondary middlebox and demonstrate that the primary censorship middlebox can be defeated independently from the secondary. Our code is publicly available.
Tor 出口阻止的性质和动态特征勘误表
DOI: --
发表时间: 2018
期刊:
影响因子: --
作者:
Rachee Singh;Rishab Nithyanand;Sadia Afroz;P. Pearce;Michael Carl Tschantz;Phillipa Gill;V. Paxson
通讯作者: V. Paxson
DOI: 10.1145/3200947.3201037
发表时间: 2018-07
期刊: Proceedings of the 10th Hellenic Conference on Artificial Intelligence
影响因子: --
作者:
Kei Yin Ng;Anna Feldman;C. Leberknight
通讯作者: Kei Yin Ng;Anna Feldman;C. Leberknight
光线照进来的地方:分析印度的网络审查机制
DOI: --
发表时间: 2018
期刊: ACM/SIGCOMM Internet Measurement Conference
影响因子: --
作者:
T. Yadav;Akshat Sinha;D. Gosain;P. Sharma;Sambuddho Chakravarty
通讯作者: Sambuddho Chakravarty
DOI: 10.1109/spw53761.2021.00059
发表时间: 2021-05
期刊: 2021 IEEE Security and Privacy Workshops (SPW)
影响因子: --
作者:
Kevin Bock;Pranav Bharadwaj;Jasraj Singh;Dave Levin
通讯作者: Kevin Bock;Pranav Bharadwaj;Jasraj Singh;Dave Levin
DOI: --
发表时间: 2013
期刊: IEEE Symposium on Foundations of Computational Intelligence
影响因子: --
作者:
Sheharbano Khattak;M. Javed;Philip D. Anderson;V. Paxson
通讯作者: V. Paxson