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Which VPNs document post-quantum tunnel support?
The distinctions that matter are whether a feature is deployed, which protocol and apps use it, and whether the connection actually negotiates the post-quantum option. Provider documentation establishes what the providers say their products support; it is not independent validation of every implementation. The information below reflects official material checked on October 9, 2026, and app behavior can change.
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| Provider or product | What its documentation establishes | Key compatibility detail |
|---|---|---|
| NordVPN | A post-quantum cryptography option is deployed in its apps. | Works with NordLynx; unavailable with OpenVPN, Dedicated IP, and Meshnet. |
| Mullvad | Quantum-resistant WireGuard tunnels are enabled by default on desktop platforms, according to its January 9, 2025 announcement. | On desktop, check the setting and the app’s “Quantum resistance” indicator. The announcement did not establish current mobile availability or defaults. |
| OpenVPN Access Server | Documents hybrid post-quantum key agreement for compatible server and client software. | This is a configurable server capability, not evidence that retail VPN services using OpenVPN enable it. |
| Proton VPN | Its checked technical material describes groundwork for future post-quantum cryptography. | The material checked does not document a currently deployed post-quantum VPN tunnel feature. |
NordVPN: post-quantum protection requires NordLynx
Nord Security announced a wider app rollout on May 22, 2025. Its first NordLynx post-quantum upgrade arrived on Linux in September 2024, with the company saying it rolled out the feature for Windows, macOS, iOS, and Android during 2025, including Android TV and tvOS. The support documentation specifies that the feature is compatible only with NordLynx, not OpenVPN, Dedicated IP, or Meshnet. Check the protocol shown in the app rather than assuming an automatic protocol choice keeps post-quantum protection active.
Sources: Nord Security’s rollout announcement and NordVPN’s support documentation.
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Mullvad: desktop default, mobile status needs checking
Mullvad’s January 9, 2025 announcement says its 2025.2 desktop release enabled quantum-resistant WireGuard tunnels by default on Windows, making the feature default across desktop platforms. On desktop, check Settings → VPN settings → WireGuard settings → Quantum-resistant tunnel: the option should be Automatic or On, and the connected app should show its “Quantum resistance” indicator.
Mullvad says the tunnel uses post-quantum key encapsulation mechanisms to exchange a pre-shared key for WireGuard, naming Classic McEliece and ML-KEM. It says the implementation moved from the earlier Kyber standard to NIST-standardized ML-KEM. The announcement said Mullvad hoped to enable the feature by default on iOS and Android in the future; that dated statement does not establish current mobile availability or behavior. Check the mobile app’s current settings and connection indicator.
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Sources: Mullvad’s January 2025 announcement and its November 2022 announcement. The earlier post described the feature as experimental, desktop-only, and CLI-enabled at that time; it is historical context, not the current desktop status.
OpenVPN Access Server: not a shortcut to consumer VPN support
OpenVPN Access Server documents hybrid X25519MLKEM768 key agreement when the server and client support it, using OpenSSL 3.5 or newer. Its tutorial also covers FIPS-mode groups and warns that clients missing a required group can fail to connect if an administrator forces post-quantum-only negotiation. A mixed group configuration can retain compatibility with traditional X25519 clients. The tutorial says OpenVPN Connect v3 did not support OpenSSL 3.5 at the time it was written, so check current client and server versions before relying on this capability. These deployment instructions do not establish that a retail VPN service enables post-quantum cryptography.
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Source: OpenVPN Access Server’s post-quantum cryptography tutorial.
Proton VPN: future groundwork in the material checked
Proton’s technical article describes its Proton protocols as a new WireGuard-based client framework that prepares groundwork for future technologies, including post-quantum cryptography. Its protocol feature page describes OpenVPN and WireGuard. The official material checked does not document a currently deployed Proton VPN post-quantum tunnel feature; this is not a claim that its status cannot change.
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Sources: Proton’s technical article and Proton VPN’s protocol documentation.
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- Confirm it is deployed. Look for documentation of an available production feature, not just an experiment, roadmap, or statement about future readiness.
- Match the feature to your protocol and app. Check which protocol provides the protection and whether it works on the device you use: desktop, mobile, TV, router, or manual configuration. Do not assume that support on one platform carries over to another.
- Verify the active connection. Find out whether the setting is on by default and whether the app shows a quantum-resistant status or negotiated key agreement. A feature toggle alone may not confirm that the current connection uses it.
- Check what disables it. Determine whether a different protocol, dedicated IP, Meshnet, custom profile, or older client removes the feature or prevents connection.
- Assess the VPN on ordinary grounds, too. Review its privacy policy, independent audits, platform support, reliability on your network, jurisdiction, customer support, price, and any functions you need. Post-quantum marketing does not answer those questions.
- Match it to your threat model. The feature is most relevant if the confidentiality of captured traffic needs to last a long time and an adversary could store encrypted data now for possible decryption later.
What post-quantum protection does—and does not—cover
A VPN’s post-quantum feature concerns key establishment for its tunnel. For example, Mullvad describes using post-quantum key encapsulation to exchange a pre-shared key for WireGuard; OpenVPN Access Server describes hybrid key agreement. This is distinct from the symmetric encryption that protects traffic after keys are established, and from end-to-end encryption in messaging or other apps.
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- Powerful Pass-Through Charging: Supports up to 85W pass-through charging so you can power up your laptop while you use the hub. Note: Pass-through charging requires a charger (not included). Note: To achieve full power for iPad, we recommend using a 45W wall charger.
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A supported post-quantum key exchange does not make an entire VPN service “quantum-proof.” It does not by itself establish that authentication, endpoints, user accounts, or communications outside the VPN are protected against every quantum-related risk. Keep devices and accounts secure, and assess the provider and app configuration as separate parts of your security decision.
What the available performance evidence says
The official materials reviewed provide no independently comparable speed or latency figures for these features. Nord Security says it collected performance metrics during the Linux rollout, but its announcement publishes no numerical result. That statement is not evidence of either zero slowdown or a specific performance penalty.
Quick Recap
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