Roger Dingledine: How Russia Is Trying to Block Tor
A DEF CON 30 talk about attempts to censor the Tor network in Russia. After the Tor website was blocked in 2021, internet providers began using DPI filtering and IP address blocking to restrict access to the network.
The talk explains how the Tor team analyzed censorship techniques, reverse engineered blocking mechanisms, and adapted their infrastructure — from rotating IP addresses to modifying software. It also explores the ongoing arms race between censorship and anti-censorship technologies, and how more governments are turning to network-level filtering as a tool of political control.
The talk explains how the Tor team analyzed censorship techniques, reverse engineered blocking mechanisms, and adapted their infrastructure — from rotating IP addresses to modifying software. It also explores the ongoing arms race between censorship and anti-censorship technologies, and how more governments are turning to network-level filtering as a tool of political control.