7 min read

Updated: September 12, 2026

VPNs in the Most Censored Countries: Iran, China, Russia

Three filtering systems, built by different people at different times, arrived at the same conclusion: blocking addresses is pointless, you have to recognise the protocol itself. So in 2026 the same solutions fail in all three countries — OpenVPN, L2TP, plain WireGuard, Shadowsocks in its basic configuration — and the same class of protocols survives: the ones indistinguishable from ordinary HTTPS. Here's how the three systems differ, what gets through each, and where any VPN's capabilities end.

The three systems side by side

| | China | Iran | Russia | |---|---|---|---| | What it's called | the Great Firewall (GFW) | TIC filtering, the National Information Network | TSPU | | Primary technique | active probing of servers | ML-assisted traffic analysis, breaking encryption negotiation | protocol signature analysis | | Reset injection | yes, forged TCP RST | yes | yes | | DNS response tampering | yes | yes | yes | | Model | blacklist with whitelist elements | moving to a whitelist | blacklist plus signatures | | Full shutdowns | no, targeted only | yes, nationwide | regional mobile internet restrictions | | Legal status of VPN use | use isn't criminalised, provision is regulated | unauthorised use placed outside the law | use isn't punishable, advertising is |

Active probing, and why it changes the rules

The most underestimated part of the Chinese system. The filter doesn't just watch your traffic — it connects to your server itself and checks how it answers.

The mechanism: the system notices a connection with an unusual handshake, records the address, and some time later sends its own probe to it. If the server replies the way VPN servers reply, the address goes on a blacklist. An ordinary user never sees this happen — they simply find that yesterday's working server is silent today.

From that follows something no amount of encryption solves: the server has to answer a stranger's probe convincingly. That's exactly what the Reality protocol is built for — it performs its handshake borrowing the TLS certificate of a real, widely-visited site, and answers a probe with precisely what that site would return. There's nothing for the probing system to catch. Details: what Reality and VLESS are.

Iran's approach: don't block, break

Iran's filtering infrastructure, operated by TIC, works differently in 2026. Instead of closing addresses, it interferes with the encryption negotiation itself: the connection establishes, authentication passes, and then the channel quietly stops carrying data.

For a user that's worse than an outright block. The app shows "connected", there's no error, and there's no internet either — so people spend an hour checking settings that were fine all along.

Two other distinctive features:

The shift to a whitelist. What's explicitly permitted is allowed; everything else is closed by default. That's fundamentally stricter than a blacklist, where only listed things are closed.
Nationwide shutdowns. On 8 January 2026 the country's internet was switched off entirely: usage fell by roughly 97%, and the communications minister acknowledged it was costing the economy $35.7 million a day. During a full shutdown no VPN works at all — there's nothing left to tunnel through.

Worth knowing separately: unauthorised VPN use in Iran has been placed outside the law. That isn't a technical detail but a legal one, and it changes the cost of a mistake.

What's specific to Russia

Filtering runs on TSPU — equipment installed on operators' networks under centralised control. It differs from the other two systems in being younger and moving faster: protocols are cut off one after another, and settings vary between nodes, so neighbours on different operators see different pictures. Details: what TSPU is.

The legal frame: use itself isn't punishable, but liability was introduced for advertising circumvention tools and for deliberately searching for extremist materials.

What fails in all three countries

As of 2026, these are reliably cut off:

OpenVPN — a recognisable pattern in its first packets; in mainland China it barely works at all;
L2TP/IPsec and PPTP — trivially identified;
Plain WireGuard — fixed packet sizes and structure;
Shadowsocks in its basic configuration — a characteristic entropy fingerprint in the first bytes;
QUIC-based solutions without obfuscation — China throttles QUIC broadly precisely because of VPNs built on it, and Hysteria2 falls under that.

They share one trait: a signature of their own. Once a protocol has a recognisable handwriting, it ends up in a filtering rule sooner or later.

What survives

One class of solution: the ones that don't look like a VPN at all.

VLESS with Reality masking — by the accounts of operators and researchers, the protocol that most consistently survives Chinese filtering. Two properties work together: the traffic is indistinguishable from an ordinary HTTPS session, and the server answers active probing correctly, because it answers as the real site whose certificate it borrows.

AmneziaWG — WireGuard with an altered packet structure. Simpler to set up, weaker masking.

A comparison with numbers: Hysteria2, TUIC and AmneziaWG.

What no VPN will do

An honest boundary, worth knowing before you buy anything:

A complete internet shutdown. If the network is off, there's nothing to tunnel. Iran in January 2026 was exactly that.
International links being severed. The domestic network runs, nothing leads outward, and a VPN hits the absence of a route.
A guarantee of availability. No service can promise it will work in China or Iran tomorrow: this is a race where both sides update constantly. Any "guaranteed to work in China" is marketing.
Protection from your own actions. Signed-in accounts, browser fingerprints and app permissions remain: does a VPN make you anonymous.

What to do in practice

Keep two methods. One protocol, one backup, different addresses. Infrastructure doesn't fail all at once.
Install the app in advance. In heavily filtered countries app stores are restricted too, and downloading a client at the moment you need it is often no longer possible.
Choose nearby locations. Turkey for Iran, Singapore for China. Distance sets latency more than anything else.
Verify the tunnel actually covers your traffic rather than just showing a green icon: five tests in five minutes.

Why BessyConnect fits these conditions

The service runs on VLESS with Reality masking — the protocol class that survives filtering in these countries, because it carries no signature of its own and answers active probing correctly. Nearest locations: Turkey and Singapore for the Middle Eastern and Asian directions, Finland, Poland, Germany and the Netherlands for Europe. Over a hundred servers, so switching takes a second when one address is restricted. The kill switch on Apple devices stops traffic on a drop rather than releasing it in the clear — in a filtered country that isn't an abstraction.

Download while you still have access:

iPhone, iPad, Mac, Apple TV and Apple Watch — App Store
Android — Google Play
Android TV and set-top boxes — Google Play

What we don't promise: nobody guarantees operation in China or Iran, us included. We use the protocol with the best survival record and keep spare locations — that's everything anyone can honestly promise in this race.

Country write-ups: VPN for China and VPN for Iran.

FAQ

Which country has the strictest blocking? By combined methods, Iran: traffic analysis plus a move to whitelisting plus the practice of nationwide shutdowns. China's system is older and more precise at identifying protocols.

Which protocol works in China in 2026? VLESS with Reality masking. OpenVPN, L2TP and SSTP barely get through mainland China, and QUIC-based solutions are throttled broadly.

Why does my VPN show "connected" with no internet? A typical sign of the Iranian approach: the connection establishes while data transfer is broken at the encryption-negotiation stage. Changing server and protocol helps more often than editing settings.

Will a VPN help during a full internet shutdown? No. If the network is off or international links are cut, there's nothing to tunnel through.

Is using a VPN legal in these countries? It varies. Iran has placed unauthorised use outside the law; Russia doesn't punish use but does punish advertising circumvention tools; China primarily regulates providing the service. Check the rules in your own jurisdiction.

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