The direct answer

Yes—using a VPN can help protect your IoT devices, mainly by encrypting and tunneling network traffic so it’s harder for outsiders to read it while it travels. However, a VPN is not a complete security solution: it cannot fix weak device passwords, outdated firmware, insecure configuration, or risky services that your IoT devices expose when they are turned on.

A simple model: what a VPN changes (and what it doesn’t)

Think of a VPN as a private “path” between your home network and the VPN provider’s network. When your IoT devices connect out to the internet, the VPN can route that traffic through the tunnel, which helps with confidentiality in transit.

What it does not automatically solve:

  • Whether your IoT devices themselves are well secured (updates, account protections, permissions).
  • Whether your router and Wi‑Fi are configured safely.
  • Whether the device is allowed to communicate with the internet in ways you did not intend.

So the right framing is: a VPN can be part of your protection, especially to reduce exposure of network traffic, but you still need baseline hardening for the devices and the home network.

Where a VPN helps most in a smart home

A VPN tends to be most useful when it addresses “in transit” risks and remote access scenarios, such as:

  • Protecting traffic when devices communicate with cloud services or remote endpoints.
  • Reducing the visibility of your device traffic to anyone monitoring the network path.
  • Providing a consistent encrypted route when you access your home setup from outside.

Still, the overall security outcome depends on how your VPN is used. For example, if only your phone uses the VPN and not the IoT devices, then the IoT devices may continue sending traffic without the same protection.

Key limitations and exceptions to keep in mind

The VPN benefit can be limited by your setup and your threat model:

  • If your IoT device has a security flaw, routing traffic through a VPN won’t prevent an attacker from exploiting that flaw.
  • If the device is misconfigured (for example, overly permissive integrations or open services), a VPN may not stop those behaviors.
  • Some IoT devices rely on discovery and local networking that may not behave as expected under certain VPN routing approaches.

Because you’re dealing with many device types, it’s wise to treat “VPN secured” as a hypothesis you verify with your own environment—rather than an assumption.

Practical checks you can do before trusting a VPN

To confirm that your smart home is actually better protected, check these points:

  1. Ensure the IoT devices’ traffic is routed through the VPN (not just your computer or phone).
  2. Keep IoT firmware and apps updated, and review device account settings and permissions.
  3. Strengthen Wi‑Fi and router basics: strong credentials, reasonable access settings, and disabling features you don’t use.
  4. Test connectivity for critical devices after enabling VPN routing, and confirm they still work as intended.

Finally, consider what you’re trying to protect against: reducing exposure of network traffic is different from preventing device takeover due to weak credentials or unpatched software. A VPN can help with the first goal, but you should cover the rest with device and network hygiene.