How to Set Up a Guest WiFi Network (and Why You Should)

By Paul Snyman · Published August 9, 2026 · 5 min read

Handing out your main WiFi password to every visitor, delivery person's device, or smart bulb you buy is a habit worth breaking. A guest network takes a few minutes to set up and solves both a convenience problem and a real security one.

Why It Actually Matters

Every device on your main network can, in principle, see and potentially reach every other device on it - your laptop, your NAS, your personal files. A guest network keeps visitors' devices and smart home gadgets (common attack targets, since many IoT devices have weaker security than a phone or laptop) off that same network entirely. If a guest's device or a compromised smart plug is ever an entry point, it has nowhere to go from an isolated guest network.

Setting It Up

1. Open your router's app or web admin page (often something like 192.168.1.1 in a browser).
2. Look for "Guest Network" or "Guest WiFi" under wireless settings - most routers from the last several years support this natively.
3. Enable it and set a distinct network name (SSID) and password, separate from your main network.
4. Confirm "client isolation" or "network isolation" is turned on - this is the setting that actually prevents guest devices from reaching your main network, not just a cosmetic separate name.
5. If your router supports bandwidth limits for the guest network, consider setting one, so a guest's large download doesn't affect your own usage.

Confirming It Actually Works

Connect a device to the guest network, then run LAN Scanner from that device. If isolation is properly configured, it shouldn't be able to see your laptop, printer, or other main-network devices at all. If it can see them, isolation isn't actually enabled despite what the settings page might suggest - worth revisiting before trusting the guest network with anything.

What About Smart Home Devices?

If your router supports a dedicated IoT network separate from both main and guest, that's the cleanest setup - see our guide on smart home devices and WiFi for more on why. If your router only offers one guest network, using it for smart home devices is still meaningfully better than leaving them on your main network with everything else.