VPN to Access Blocked Sites: How It Works and When It Won't

A VPN unblocks websites by sending your traffic through an encrypted tunnel to a server somewhere else, so the network doing the blocking (your ISP, school, office or a national filter) only sees a connection to the VPN server, not the site you’re visiting. That works well against ordinary network blocks, but it won’t help when the block lives on your device or your account, and in countries that actively hunt VPNs you’ll need a provider with obfuscation or a tool like Tor.

Below we cover how blocks work, the steps to take, what to do when the VPN itself gets blocked, and the limits worth knowing first. Details are current as of November 2026, and both VPN apps and national blocking methods change often.

How website blocking works, and why a VPN gets around it

Most blocking happens at the network level. A filter looks at where your traffic is headed and stops it if the destination is on a blocklist. Common methods include:

• DNS blocking: the network’s DNS resolver refuses to look up the blocked domain, or returns a fake address.
• IP blocking: traffic to specific server addresses is dropped.
• Traffic inspection: the filter examines connections to spot specific sites or protocols, including VPN protocols themselves.

A VPN wraps all of that in encryption and routes it to a server outside the filter’s reach. The filter sees one encrypted connection to one address. If that address isn’t blocked and the traffic doesn’t look like a VPN, the connection gets through, and the VPN server fetches the site on your behalf.

That is also why the counter-moves are predictable. Censors block VPN providers’ websites, block the IP addresses of known VPN servers, and try to recognise VPN traffic by its pattern.

Step by step: using a VPN to reach a blocked site

1. Pick a provider before you need it. In places that restrict VPNs, the provider’s website and app store page may be blocked too. Install and test the app while you still have open access, for example before travelling.
2. Install only the official app. Get it from the provider’s own site or your device’s official app store. The FTC’s VPN tips say to research the app first, review the permissions it asks for, make sure it actually encrypts your traffic, and check whether it shares your information with third parties.
3. Connect to a server in a country where the site isn’t blocked. For a school or office filter, almost any server works. For a national block, choose a server outside that country.
4. Load the site. If it opens, the block was at the network level and the VPN has done its job.
5. If it still fails, check for a DNS leak. If a leak test shows your ISP’s or school’s DNS servers while you’re connected, your lookups are escaping the tunnel. Turn on the app’s own DNS or leak-protection setting and try again.
6. If the VPN won’t connect at all, switch protocol. Try a different protocol or port in the app’s settings, and look for an obfuscation or “stealth” mode (more on that below).

When the block isn’t one a VPN can fix

A VPN changes the path your traffic takes. It doesn’t change your device or your accounts. If the site still won’t load with the VPN on, the block is probably one of these:

On managed devices, the filter often runs on the device itself, and installing a VPN may be blocked or against the rules you agreed to. Ask the IT team to unblock a site you genuinely need. That’s often quicker and carries no risk.

Streaming services push back

Streaming platforms detect VPN traffic and block it. Netflix’s help page for this error says that if you see code E106 or the message “You seem to be using a VPN or proxy,” you should turn those services off and try again, and it explains that VPNs can make your device look like it’s connecting from somewhere other than your physical location. Reviewers such as TechRadar read Netflix’s terms as prohibiting this use. In practice the typical result reported is a blocked stream rather than an account ban, but that’s their reading, not a Netflix statement.

What to do when VPNs themselves are blocked

VPN blocking is spreading. Freedom House has documented authoritarian governments expanding restrictions on VPNs, including Russia, which began blocking VPNs in 2021 and has stepped that up since 2022. Freedom House’s joint report with the European University Institute, Tunnel Vision, found anti-censorship tools such as VPNs affected in at least 21 of the 72 countries it covers.

There are two realistic options when a standard VPN connection fails.

Obfuscated (“stealth”) VPN protocols

Some providers offer protocols built to make VPN traffic look like normal web traffic. Proton VPN’s Stealth protocol is one documented example. Proton describes it as an open-source protocol based on WireGuard and TLS, designed so VPN traffic resembles ordinary HTTPS. It was inspired by VPN blocking in Iran and Russia and is offered on free and paid plans. It launched on mobile and macOS first and came to Windows later, so check Proton’s current docs for your platform.

Treat any provider’s “undetectable” claims as marketing. We found no independent testing of how well a specific stealth protocol holds up against a specific national firewall, and censors adapt.

Tor Browser with bridges

Tor is a free, volunteer-run network built for anonymity, and it has its own anti-censorship tools. When Tor is blocked, Tor Browser can connect through bridges: unlisted entry points that use “pluggable transports” to disguise traffic.

1. Download Tor Browser from the Tor Project’s official site, ideally before you need it.
2. Try the built-in bridges first in the browser’s connection settings.
3. If those are blocked, request a bridge from inside the browser. The Tor Project’s Moat tool hands out bridges and uses a captcha to stop censors from collecting them all at once.

Snowflake is one of these bridge types. It routes you through short-lived WebRTC proxies run by volunteers’ browsers. A USENIX Security 2024 paper by its developers says it has been deployed in Tor Browser and Orbot for several years and saw heavy use during censorship in Russia in 2021 and Iran in 2022. Expect Tor to be noticeably slower than a VPN.

Limits and risks to weigh first

• Legality varies. Using a VPN is legal in most places, but some governments restrict VPNs or penalise using them to bypass censorship. Several sources report that the UAE has criminalised using VPNs to get around its restrictions. Check the law where you are, especially when travelling.
• You’re moving trust, not removing it. A VPN hides your traffic from your ISP or Wi-Fi operator, but the VPN provider can now see it instead. Coverage of the FTC’s guidance stresses this shift in trust, and Consumer Reports’ 2021 review found most leading VPN providers overstated their protections.
• Websites can still identify you. Logging in, or typing in your email address, tells a site who you are no matter which server you connect through.
• Network rules still apply. Getting past a school or workplace filter can break an acceptable-use policy even when it’s technically easy.

Our take

For an everyday network block on hotel Wi-Fi, a campus network or an ISP-level filter, a reputable paid VPN with leak protection is the simplest fix. If you live in or travel to a country that blocks VPNs, choose a provider with a documented obfuscation protocol, install it in advance, and keep Tor Browser with bridges as a fallback. And when a site stays blocked even with the VPN on, the block is probably on your device or account, and no server location will change that.