Internet Censorship in China
Inside China's Great Firewall in 2026: DNS poisoning, SNI and QUIC filtering, VPN crackdowns, and what still gets through.
Category
Censorship, DPI & Network Freedom
How internet censorship actually works: blocking, filtering, deep packet inspection, traffic analysis and active probing — explained from the network up.
8 articles
01
02
Internet Censorship in Iran
Inside Iran's internet controls in 2026: national shutdowns, DNS and SNI filtering, throttling, tiered access, and what still gets through.
03
Internet Censorship in Russia
How Russia filters the internet in 2026: TSPU inspection, VPN blocking, mobile whitelist shutdowns, and what still gets through.
04
Obfuscation vs Encryption
Encryption hides what you said. Obfuscation hides that you said it. Two independent axes with different failure modes, and most protocols carry only one.
05
What Makes a VPN Resistant to Censorship?
Censorship resistance is a property of six layers, from the bytes on the wire to the cloud provider, the CDN, and the response to a probe. Protocol is one of them.
06
Why a VPN Can Work Today and Fail Tomorrow
A tunnel that worked yesterday can stop working with no change on your side. The documented record shows four distinct causes, and only one of them is the censor.
07
What Is Internet Censorship?
Censorship is not one thing. It is DNS, ports, TLS names, packet inspection and active probing. Five layers, each answering a different question about your traffic.
08
What Is Deep Packet Inspection?
DPI reads the shape of your traffic, not just where it goes. How it works, what it can classify, and why encrypted tunnels still give themselves away.