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The best VPN for IoT devices is one that works with your exact router and meets your household’s needs—not a universal winner. Many smart speakers, cameras, appliances, printers, smart TVs, and other devices cannot run a consumer VPN app, so the practical option is often configuring a compatible router as a VPN client. This guide compares five candidates—NordVPN, ExpressVPN, PrivateVPN, Private Internet Access, and Proton VPN—while separating VPNAlert’s editorial picks from the setup facts available for Proton. Before choosing a service, check your router’s exact model, firmware, and VPN client protocol support.
If you are searching for a VPN for smart-home devices or asking how to use a VPN on devices that do not support VPN apps, start with the network equipment rather than the device brand. A service may be well reviewed yet unusable on a router that lacks client mode, supports only a different protocol, or cannot handle encryption at your internet speed.
What does a VPN do for IoT devices?
A VPN client on a router can send the internet traffic of connected devices through an encrypted tunnel to a VPN provider. That can be useful for devices that do not offer their own VPN app: configure the router, connect the device to that router or network, and its eligible internet traffic can use the tunnel.
This is a network-traffic measure, not a complete device-security solution. Proton’s router guidance says the VPN encrypts traffic between the router and the VPN service, but not traffic between a device and the router. Local connections such as Bluetooth are also outside that VPN tunnel. A VPN does not update a camera’s firmware, fix weak device security, or guarantee anonymity.
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The UK National Cyber Security Centre’s VPN guidance is written for organisations, and the agency says individual consumer VPN use is outside its scope. It can inform general caution about VPNs, but it is not a consumer product ranking. For a home setup, treat the VPN as one layer alongside router and device updates, strong Wi-Fi credentials, and the device maker’s security controls.
A router-based setup can be useful when you want a smart TV, security camera, speaker, or appliance to use a different network path without modifying its software. It does not automatically cover every connection the device makes. Traffic to another device on the same home network, Bluetooth accessories, and any device connected outside the VPN router remain outside the tunnel unless the network is designed to route them through it.
How should you choose a VPN for a smart home?
Start with the router, not the provider’s headline features. A provider can be a poor fit if your router cannot act as a VPN client using a protocol and configuration the provider supports. Write down the exact router model, hardware revision if one is listed, and firmware version before comparing subscriptions.
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Look up the exact model and firmware version in the router maker’s documentation or administration interface. “VPN support” can refer to a router’s ability to host a VPN server, which is different from acting as a VPN client that routes household traffic through a provider. Proton cautions that most ISP-provided routers do not support VPN configurations. Do not assume that a router can run a client just because it lists VPN features.
Check whether the feature is available in the firmware currently installed, not merely in a different regional model or an optional beta build. If the router came from your internet provider, ask support specifically about outbound VPN client mode. A statement that the router supports VPN pass-through or VPN server access does not by itself establish that it can create a client tunnel for your home devices.
2. Match the router’s protocol to the provider’s configuration
Check whether the router supports OpenVPN or WireGuard in client mode, and whether the provider offers a configuration for that use. Proton lists both protocols and setup guides for several router platforms. The exact combination matters: a router may support one protocol but not the other, or may require a compatible firmware version.
Also check what the router expects to import or enter manually, such as a configuration file, server address, certificate, key, username, or password. Provider instructions written for a phone or desktop app may not be usable on a router. A current configuration for the exact protocol and router platform is more valuable than a general claim that the provider “supports routers.”
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3. Decide how much of the home should use the tunnel
A single router configuration may route traffic for all devices behind it, while some setups provide more targeted controls. Decide whether the goal is to route a group of IoT devices, the whole household, or only selected devices. Tom’s Guide’s router-VPN roundup compares a dedicated router-app approach with manual setup, illustrating that management can differ by setup; verify the actual controls available for your router and chosen service.
Whole-network routing is simpler but can also send phones, work computers, game consoles, and streaming devices through the same tunnel. Per-device or per-group routing is preferable when some equipment needs the ordinary internet path, local discovery, or a nearby service. Confirm whether the router can create separate networks or routing rules and whether those controls survive a reboot or firmware update.
4. Consider performance and maintenance
VPN encryption uses router resources. Proton notes that a weaker router processor may reduce speeds, so performance depends on the hardware and configuration as well as the provider and internet plan. The number of simultaneously routed devices, Wi-Fi conditions, and the chosen protocol can also affect practical results. Do not treat a provider’s advertised speed as a guarantee for an encrypted tunnel running on your particular router.
Router firmware and VPN configuration also need upkeep. A misconfiguration or VPN outage can disrupt internet access for the devices routed through that setup, so understand how to change or remove the configuration and restore the normal connection. Keep an unmodified backup of settings where the router permits one, and document which network or routing rule each IoT device uses.
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The cost has two parts: a VPN subscription, if you choose a paid plan, and potentially a compatible router or firmware upgrade. Prices, renewal rates, connection limits, and plan features change, so check each provider’s current terms rather than relying on an old comparison. A free plan may have different limits; Proton says its router counts as one connection on a Free plan. A replacement router can cost more upfront but may be safer and easier than unsupported firmware changes.
Which five VPNs are candidates for IoT devices in 2026?
The list below combines VPNAlert’s September 10, 2026 roundup with Proton’s published router setup information. VPNAlert says it reviewed more than 20 VPN services and names four of the services below among its five IoT picks. Those placements are VPNAlert’s editorial findings, not independently verified outcomes or guarantees for every router. Proton is included because its router documentation provides concrete compatibility and setup details; that does not establish that it is better than the other candidates.
| VPN | What the cited material establishes | What to verify before choosing |
|---|---|---|
| NordVPN | Named among VPNAlert’s five IoT picks in its roundup updated September 10, 2026; also covered in Tom’s Guide’s router-VPN comparison updated January 12, 2026. | Whether your exact router and firmware support a compatible client configuration, which protocols and device controls are available, and current connection limits and terms. |
| ExpressVPN | Named among VPNAlert’s five IoT picks; also covered in Tom’s Guide’s router-VPN comparison. | Whether your router’s client mode and firmware are supported, how setup and device management work for your configuration, and current connection limits and terms. |
| PrivateVPN | Named among VPNAlert’s five IoT picks. The cited router roundup information does not establish a specific compatible router or protocol for this service. | Ask whether a configuration is available for your exact router and protocol, and check how it is installed, maintained, and managed. |
| Private Internet Access | Named among VPNAlert’s five IoT picks. The cited material does not establish a specific router, firmware, or protocol match for your setup. | Confirm client configuration support for your router and check current setup instructions, device controls, connection limits, and terms. |
| Proton VPN | Proton says router configurations are available on all its plans, including Free, and publishes guides for several router platforms. It says a router must support OpenVPN or WireGuard as a client. | Confirm your exact model and firmware, choose a supported protocol, and consider the router’s processing capacity. Proton says a router counts as one connection on a Free plan. |
This table is a shortlist, not a universal ranking. The available provider-specific information is uneven: Proton’s documentation spells out some router requirements, while the roundup placements for the other candidates reflect VPNAlert’s review rather than details verified for every model. Ask each provider or consult its current setup documentation before subscribing, especially if you need per-device routing or a particular router platform.
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How do you set up a VPN for devices that cannot run VPN apps?
The setup takes place on a router that supports VPN client mode. Menu names and the order of configuration steps vary by router and provider, so use the instructions for your exact model and firmware rather than relying on a generic menu path.
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- Identify your router. Record its exact model, hardware revision, and firmware version. If it came from your internet provider, check the provider’s documentation or ask support whether it supports VPN client configurations.
- Map the devices and traffic you want covered. List the cameras, TVs, speakers, appliances, printers, and other equipment that should use the tunnel. Note devices that require local discovery, Bluetooth, or direct local access so you can test them after routing changes.
- Check client mode and protocol. Confirm the router can act as a client—not only as a VPN server—and supports OpenVPN or WireGuard in the mode you intend to use.
- Choose a provider configuration for that router. Obtain instructions and configuration files from the provider’s current documentation. Confirm the protocol matches the router’s capabilities and that any required credentials or certificates are supplied for router use.
- Back up and record the original setup. Save existing settings where possible, record the ordinary DNS and network configuration, and learn the router’s reset or recovery process before making changes.
- Apply the configuration carefully. Follow the router- and provider-specific steps. Do not substitute a configuration intended for a different model, firmware branch, or protocol.
- Connect an IoT device and check its behavior. Verify that the device remains reachable, local controls still work, and it can use the internet as expected. If the router offers traffic or connection status, use it to confirm the intended route; do not assume a device is covered merely because it is connected to Wi-Fi.
- Test failure and recovery. Temporarily disconnect the tunnel, reboot the router, and confirm you know whether the setup blocks traffic, falls back to the ordinary connection, or leaves devices offline. Choose the behavior that fits the household before relying on it.
- Plan for maintenance and recovery. Keep router firmware current, monitor provider and router setup guidance for changes, and know how to disable or remove the VPN configuration if it interrupts connectivity.
Proton warns that flashing firmware incorrectly can make a router stop working. Do not install alternate firmware unless it is appropriate for the exact model and you understand the recovery process. If the router’s client support is unclear, ask the manufacturer or internet provider before changing firmware or buying a replacement. A supported replacement router is usually easier to maintain than an improvised configuration that cannot receive normal updates.
What does a router VPN protect—and what does it leave exposed?
A router VPN protects only the network traffic that actually passes through its tunnel. The distinction matters for smart-home devices because they use more than one kind of connection.
- Traffic from the router to the VPN service: Proton says this segment is encrypted by the router VPN.
- Traffic between an IoT device and the router: Proton says this local link is not encrypted by the VPN tunnel. Wi-Fi security still matters, so use a strong wireless password and current router security settings.
- Local device connections: Bluetooth and other local communications do not pass through the router’s VPN tunnel simply because the device also has internet access.
- Traffic outside the VPN router: A phone using cellular data, a device connected to a guest network without the tunnel, or equipment attached to another access point may not be covered.
- Device and account security: A VPN does not patch outdated firmware, secure a weak account password, prevent a device from being compromised, or stop its maker from collecting information through the device or service.
- Availability: If the tunnel or configuration fails, devices routed through it may lose internet access or behave differently. A VPN is not a guarantee of uninterrupted service.
Keep those limits in mind when deciding what problem you are trying to solve. A VPN can change the network path and protect the routed segment; it does not replace updates, strong Wi-Fi credentials, multifactor authentication where available, or the device maker’s own security measures.
When is a VPN router a poor fit?
A router VPN may not be practical if the current router lacks client mode, cannot use a protocol supported by the provider, or is too limited to run the configuration reliably. It can also be a poor fit if you need simple per-device controls but the available setup routes the whole network together.
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It may create compatibility problems for devices that depend on local discovery, region-specific services, inbound connections, or unusually low latency. Those issues are setup-specific, so test every important function rather than assuming that internet access alone proves success. If a camera becomes unreachable from its app or a speaker disappears from local control, review routing rules and local-network requirements before concluding that the provider is defective.
Flashing firmware to add functionality carries risk: Proton cautions that an incorrect flash can leave a router unusable. Replacing or reconfiguring networking equipment is not the only answer; first ask the router maker or internet provider about supported firmware and client features. If the feature is unavailable, compare the cost and effort of a compatible router with alternatives such as leaving the devices on the existing network and strengthening their routine security settings.
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How should you make the final choice?
Use the exact router as the deciding filter, then compare the provider configurations that remain. A roundup recommendation cannot guarantee compatibility with your firmware or household layout, and the available details do not support a single best service for every IoT setup.
- Write down your router model, hardware revision, and firmware.
- Confirm client mode and supported protocol with the router documentation.
- For each candidate, find a current configuration for that exact router and protocol.
- Check whether the setup supports the device-level control you need, or routes a broader group of devices.
- Consider router processing capacity, expected performance, and what happens when the tunnel is unavailable.
- Check the provider’s current subscription price, renewal terms, connection limits, and configuration requirements.
- Test one low-risk IoT device before moving cameras, work equipment, or the entire household.
- Keep a recovery plan and continue normal firmware, password, and Wi-Fi maintenance.
VPNAlert’s five-provider list is a useful starting point for candidates, while Proton’s support pages offer specific router requirements and limitations. For a purchasing decision, current provider setup instructions and the router manufacturer’s documentation are more important than a general “best VPN” label.
Sources and scope
- VPNAlert, “5 Best VPNs for IoT Devices (2026),” updated September 10, 2026; its rankings and review findings are attributed to that publisher.
- Tom’s Guide, “The best router VPN in 2026,” updated January 12, 2026; it compares router VPN setup approaches and providers.
- Proton VPN, “Install Proton VPN on your router,” official support documentation accessed October 25, 2026; its plan, protocol, router, protection-boundary, firmware, and performance statements are Proton’s own.
- UK National Cyber Security Centre, “Device security guidance: Virtual Private Networks,” published June 29, 2021 and reviewed May 13, 2025; its stated scope is organisations, not individual consumer VPN use.
Frequently Asked Questions
Can I put a smart TV or security camera on a VPN without installing an app?
Potentially, if the router serving that device can operate as a VPN client and has a compatible configuration from the provider. The device itself does not need an app in that arrangement, but you should confirm the router’s behavior and the device remains reachable after setup.
Will a router VPN hide my smart-home device’s activity from its manufacturer?
A VPN changes and encrypts the network path to the VPN service for traffic routed through it; it does not prevent a device maker from receiving information through its service or device account. Review the device’s privacy settings and the maker’s data practices separately.
Can a VPN stop a smart device from being hacked?
No. A VPN is not a substitute for secure device design, current firmware, or strong account credentials, and it does not guarantee protection against compromise. Treat it as a network-traffic measure rather than an endpoint-security fix.
Does every device connected to my Wi-Fi automatically use the VPN?
Not necessarily. Coverage depends on how the router’s client configuration routes traffic and whether the device is connected through that router or network. Check the router’s controls and confirm the route for each device or group you intend to cover.
Do ISP-provided routers support VPN client mode?
Many do not. Proton specifically cautions that most ISP-provided routers do not support VPN configurations. Check the exact model and firmware, and ask the provider whether outbound OpenVPN or WireGuard client mode is supported.
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Is OpenVPN or WireGuard better for an IoT router?
Neither is universally better for every setup. The deciding factor is whether your router supports the protocol in client mode and whether the provider supplies a compatible configuration. Hardware capacity and firmware can affect practical performance.
Will a VPN slow my smart-home internet connection?
It can. Proton notes that a weaker router processor may reduce speeds because encryption uses router resources. Results vary with router hardware, internet plan, provider, protocol, and the number of routed devices, so test your own setup.
What happens if the VPN connection drops?
Depending on the router and configuration, routed devices may lose internet access or behave differently. Learn whether your setup blocks traffic or falls back to the ordinary connection, and keep instructions for disabling the configuration and restoring normal service.
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Does Proton’s Free plan work on a router?
Proton says router configurations are available on all its plans, including Free, but the router counts as one connection on a Free plan. Confirm current plan terms and the exact router and protocol requirements before configuring it.
Should I flash alternate firmware to add VPN support?
Only if the firmware is intended for your exact model and you understand the recovery process. Proton warns that flashing firmware incorrectly can make a router stop working. Check for supported manufacturer firmware or use a compatible replacement router first.
The Bottom Line
A VPN can cover IoT devices that cannot run apps, but the router is the real compatibility gate. Verify client mode, firmware, OpenVPN or WireGuard support, routing controls, performance, cost, and recovery steps before subscribing or changing firmware. The safest choice is the service and router combination that works reliably for the devices you actually need to protect.
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