TECHNIQUES

sni-blocking   SNI-based blocking

Classifying or dropping TLS connections based on the SNI extension in ClientHello.

Synonyms: SNI filtering

22 PAPERS ON FILE

• 2025-alaraj-iran-refraction Measuring Censorship in Iran Using Refraction-based Proxies ACM ASIA Conference on Computer and Communications Security · 2025
• 2025-amnesty-pakistan-shadows Shadows of Control: Censorship and mass surveillance in Pakistan Amnesty International (ASA 33/0206/2025) · 2025
• 2025-geedge-mesa-leak Geedge & MESA Leak: Analyzing the Great Firewall's Largest Document Leak gfw.report · 2025
• 2025-interseclab-internet-coup The Internet Coup InterSecLab (research consortium report) · 2025
• 2025-jfm-silk-road-surveillance Silk Road of Surveillance Justice for Myanmar (research report) · 2025
• 2025-lange-i-ra-nconsistencies I(ra)nconsistencies: Novel Insights into Iran's Censorship Free and Open Communications on the Internet · 2025
• 2025-niere-transport Transport Layer Obscurity: Circumventing SNI Censorship on the TLS Layer Symposium on Security \& Privacy · 2025
• 2025-tai-irblock IRBlock: A Large-Scale Measurement Study of the Great Firewall of Iran USENIX Security Symposium · 2025
• 2025-wendzel-survey A Survey of Internet Censorship and its Measurement: Methodology, Trends, and Challenges Computers \& Security · 2025
• 2025-wu-regional-censorship A Wall Behind A Wall: Emerging Regional Censorship in China IEEE S&P · 2025
• 2025-zohaib-quic-sni Exposing and Circumventing SNI-based QUIC Censorship of the Great Firewall of China USENIX Security · 2025
• 2024-xue-tspu-russia Tspu: Russia's decentralized censorship system IMC · 2024
• 2023-ramesh-certainty CERTainty: Detecting DNS Manipulation at Scale using TLS Certificates USENIX Security Symposium · 2023
• 2021-satija-blindtls BlindTLS: Circumventing TLS-Based HTTPS Censorship Free and Open Communications on the Internet · 2021
• 2021-wei-domain Domain Shadowing: Leveraging Content Delivery Networks for Robust Blocking-Resistant Communications USENIX Security Symposium · 2021
• 2020-gfw-esni-blocking Exposing and Circumventing China's Censorship of ESNI gfw.report · 2020
• 2020-singh-india How India Censors the Web Web Science · 2020
• 2019-chai-importance On the Importance of Encrypted-SNI (ESNI) to Censorship Circumvention Free and Open Communications on the Internet · 2019
• 2015-fifield-blocking-resistant Blocking-resistant communication through domain fronting PETS · 2015
• 2012-appelbaum-technical Technical analysis of the Ultrasurf proxying software The Tor Project · 2012
• 2011-wright-fine-grained Fine-Grained Censorship Mapping: Information Sources, Legality and Ethics Free and Open Communications on the Internet · 2011
• 2006-clayton-ignoring Ignoring the Great Firewall of China Privacy Enhancing Technologies · 2006