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If a hacker compromises your security camera, they shouldn't be able to reach your computers and financial data. Network segmentation creates barriers that contain breaches.
On a typical home network, every device can talk to every other device. That means a compromised camera can access your computer.
• Hacker compromises camera
• Camera scans entire network
• Finds computer with financial data
• Steals data or installs ransomware
• Hacker compromises camera
• Camera can only see other cameras
• Firewall blocks access to main network
• Your data remains protected
VLAN 10
Computers, phones, tablets
Full internet, can access IoT
VLAN 20
Cameras, sensors, smart devices
Limited or no internet, isolated from main
VLAN 30
Visitor devices
Internet only, no local access
| From | To | Allow? | Why |
|---|---|---|---|
| Main | IoT | You can control cameras | |
| IoT | Main | Cameras can't reach your data | |
| Guest | Main | Visitors isolated | |
| Guest | IoT | Visitors can't see devices | |
| IoT | Internet | Block phoning home (optional) |
Key Principle: Your trusted devices can reach IoT devices (so you can view cameras), but IoT devices cannot initiate connections back to your trusted network.
Managed switch or VLAN-capable router
Ubiquiti, TP-Link Omada, MikroTik
VLAN-capable WiFi access point
For multiple SSIDs per VLAN
Basic networking knowledge
Or willingness to learn
Time for initial setup
2-4 hours depending on complexity
If VLANs seem complex, start by putting all IoT devices on your router's guest network. Most routers have this built-in, and it provides basic isolation without additional hardware.
Start with putting IoT devices on a guest network, then consider VLANs for more granular control.