On the Importance of Encrypted-SNI (ESNI) to Censorship Circumvention

1. Publications
2. Trace Overview
3. Layout
- 3.1. Directory Descriptions
4. Contact

1 Publications

Zimo Chai, Amirhossein Ghafari, Amir Houmansadr. On the Importance of Encrypted-SNI (ESNI) to Censorship Circumvention. In Proc. of: Free and Open Communications on the Internet, 2019, USENIX

2 Trace Overview

We release all our probing tools and datasets to maintain reproducibility and to benefit future works on censorship measurement, obtainable at UMass Traces website.

3 Layout

Layout of the folder:

.
├── dns_injection
│   ├── experiments
│   └── list
├── esni_experiments
│   ├── esni_1m
│   ├── esni_censorship_detection_countries
│   ├── esni_initial_test
│   └── scan_cloudflare_debugging_page
├── figures
├── ip_blocking
│   ├── dns_resolving_tool
│   ├── map_blocked_ip_to_blocked_domain
│   ├── masscan
│   ├── masscan_in_bjjj
│   ├── masscan_in_vj
│   └── results_is_here
├── sni_filtering
└── table_of_everything

3.1 Directory Descriptions

dns_injection directory contains the code and datasets used in the DNS injection detection experiment. The raw .pcap files are not included as the size of the folder is already huge.
sni_filering directory contains the code and datasets used in the SNI filering censorship detection experiment.
ip_blocking directory contains the code and datasets used in the IP blocking censorship detection experiment. Specifically, the code and datasets for the DNS resolving from Hongkong experiment is within dns_resovling_tool directory; the code and datsets for SYN-ping results from China and US are in massscan_in_bjjj and masscan_in_vj directories respectively. We use tools in map_blocked_ip_to_blocked_domain for mapping between IP and domains. Finally, all results are summaried and analized in results_is_here directory.
All results from the above three directories are summarized and integrated together into one file called table_of_everything.csv which is in the table_of_everything directory.
figures folder contains the images generated from a file called data.txt. The data.txt is simply the table_of_everything.csv file without the first header line.

4 Contact

Please do not hesitate to contact Zimo Chai via zchai@cs.umass.edu if you need any assistance with using this trace.