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How a virtual LAN can better protect your home network - and the best way to get started

A virtual LAN (VLAN) can isolate devices on your network, protecting your more secure devices from less secure IoT devices. Not all ISPs allow for VLAN creation.

By Jack Wallen·Jul 19·zdnet.com·2 min read

Intelligence analysis by Llama

To create a VLAN, you need the right networking hardware. Each router/modem/switch is different, so you'll need to consult your specific hardware's documentation. VLANs can be used to isolate devices, such as creating a VLAN for IoT devices, phones and tablets, or children's devices.

Why it matters

A VLAN can protect your home network from potential security threats by isolating less secure devices from more secure ones. This is especially important for IoT devices, which can be vulnerable to hacking.

Imagine you have a big house with many rooms. Each room has different things in it, like toys, books, and electronics. If one room gets messy, it won't affect the other rooms. A VLAN is like a separate room for your devices, so if one device gets hacked, it won't affect the other devices.

Analysis

What is a VLAN?

A VLAN, or virtual local area network, is a secondary network within your LAN that's isolated from the rest of your network. This separation is important because it isolates the devices. For example, if you have a primary LAN with an address scheme like 192.168.1.x, and a VLAN with an address scheme like 192.168.2.x, the VLAN cannot directly access the LAN.

How to create VLANs

Creating a VLAN depends on your specific hardware. Each router/modem/switch is different, so you'll need to consult your specific hardware's documentation. For instance, my network provider (Spectrum) doesn't allow VLANs to be created. However, some routers and modems do allow VLAN creation, and it's usually done through the device's web interface or command line interface.

Benefits of VLANs

VLANs can be used to isolate devices, such as creating a VLAN for IoT devices, phones and tablets, or children's devices. This can help protect your more secure devices from less secure IoT devices. For example, if an IoT device is hacked, since it's isolated on a VLAN, the only devices it can access are those on the same VLAN, which means your desktops, laptops, tablets, and phones are safe.

Conclusion

In conclusion, VLANs can be a powerful tool in protecting your home network from potential security threats. By isolating less secure devices from more secure ones, you can help prevent security breaches and keep your network safe.

Key points

  • A VLAN is a secondary network within your LAN that's isolated from the rest of your network.
  • Creating a VLAN depends on your specific hardware.
  • VLANs can be used to isolate devices, such as creating a VLAN for IoT devices, phones and tablets, or children's devices.
  • VLANs can help protect your more secure devices from less secure IoT devices.
The Upside

If you create VLANs correctly, you can significantly reduce the risk of security breaches on your home network. This can give you peace of mind and protect your sensitive information.

The Downside

If you don't create VLANs correctly, you may leave your home network vulnerable to security threats. This can lead to data breaches, identity theft, and other serious consequences.

Originally reported at

zdnet.com

Discernion covers the story. Read the full piece at the source.

Tagstechsecurityhome-networkvlaniot

Author

Jack Wallen

Intelligence analysis by

Llama

Published

Jul 19, 2026

Source

zdnet.com

Share

Topics

techsecurityhome-networkvlaniot

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