by mingkui | April 22, 2021
We invited guest blog author, Mingkui Wei, to submit a summary of their research to the blog this week. This blog post is based on the upcoming Usenix Security paper (full version here). Note that the domain shadowing ideas presented herein are intended to be a building block for a future system that doesn t exist for end-users yet. We hope this post will help system designers to think in new ways, and use those ideas to build new censorship circumvention tools.
What is Domain Shadowing?
Domain shadowing is a new censorship circumvention technique that uses Content Distribution Networks (CDNs) as its leverage to achieve its goal, which is similar to domain fronting. However, domain shadowing works completely differently from domain fronting and is stronger in terms of blocking-resistance. Compared to domain fronting, one big difference among many is that the user in domain shadowing is in charge of the whole procedure. In other words, the comple
Table 5 - Comparing 2019 growth to 2020 growth.
Within these two lists there are a small number of economies where IPv6 deployment in 2020 exceeded the 2019 levels. In most cases the deployment slowed down in 2020, with the exception of the Philippines, Saudi Arabia, Thailand, Colombia, Ecuador, Argentina and Sri Lanka in this list. We can further break this down into a month-by-month change across 2020, tracking the five largest national deployments, shown in Figure 10.
India s growth occurred in the first half of the year, while China s effort took place in the third quarter. Overall, the most active months were April and September according to the measurement data. This is a major change from 2019, where June 2019 saw the highest growth in the number of users, shown in Figure 11, and the monthly growth rates were consistently double or triple the monthly growth rates seen across 2020. It is evident that the pandemic had an impact across the entirety of 2020.