Homelab VLAN Segmentation

How to split a home network into isolated VLANs so IoT devices, guests, and your main PCs cannot talk to each other. The most impactful security upgrade for a home network.

All firewall rules shown here add isolation between segments — they do not remove existing protections. Apply changes in a maintenance window and verify connectivity between segments after each step before moving on.

When to Use

• Setting up VLANs on a home network for the first time
• Isolating IoT devices (smart bulbs, cameras, TVs) from trusted devices
• Creating a guest Wi-Fi network that cannot reach home devices
• Explaining how VLANs work to someone unfamiliar with the concept
• Configuring trunk ports, access ports, and SSID-to-VLAN mapping
• Troubleshooting inter-VLAN routing or firewall rule issues on pfSense/OPNsense/UniFi

How It Works