How to Set Up a Guest Wi-Fi Network

A guest network is a separate Wi-Fi name that gives internet access but blocks devices from reaching your main network. Free, takes 5 minutes, and dramatically improves home security.

Why bother with a guest network

• Privacy: guests can't see your shared files, printers, or NAS
• Security: if a guest's phone is infected, it can't spread to your computers
• Convenience: share a separate password without giving out your main one
• Isolation for smart devices: put smart bulbs, plugs, and TVs on guest network so a compromised device can't reach your important stuff

Step 1: Open your router settings

Two ways:

Easy way: use your router's app. Most modern routers have one (Eero, Google Wifi, Nest Wifi, Netgear Nighthawk, Asus, TP-Link Tether).

Browser way: open any browser, type in your router's address. Common ones:

• 192.168.1.1
• 192.168.0.1
• 10.0.0.1 (Xfinity)
• 192.168.1.254 (AT&T)

Log in. Username and password are usually printed on the back of the router unless you changed them.

Step 2: Find Guest Network settings

Look in the menu for one of:

• Guest Network
• Guest Wi-Fi
• Guest Access
• Wireless > Guest

Step 3: Enable and configure

1. Toggle Enable Guest Network on
2. Set a network name (SSID). Make it different from your main: "MyHome-Guest"
3. Set a password. Use at least 12 characters with letters and numbers
4. Set security to WPA2 or WPA3 (not WEP, never Open)
5. Make sure "Allow guests to access local network" is OFF (this is the whole point)
6. Save

Step 4 (optional): Limit bandwidth and time

Many routers let you set:

• Bandwidth limit: cap guests at, say, 25 Mbps so they don't hog your internet
• Time limit: guest network turns off automatically after a set time
• Schedule: only enable certain hours

Step 5: Test it

On a phone, connect to the new guest network. Open a browser and load a website. Confirm internet works. If you have a printer on your main network, try to print: it should NOT find the printer (that's correct, that's the isolation working).

Common router brands and where to find guest settings

• Eero: Eero app > Settings > Guest Access
• Google/Nest Wifi: Google Home app > Wi-Fi > Show password > Set up guest network (newer models) or via the Google Wifi app
• Netgear: Nighthawk app > WiFi Settings > Guest WiFi
• TP-Link: Tether app > Tools > Guest Network
• Asus: Asus Router app > Settings > Guest Network
• Xfinity Gateway: Xfinity app > Internet > Guest network
• AT&T: Smart Home Manager > Network > Manage devices > Guest network

Pro tip: Use guest network for smart home devices

Cheap smart bulbs, plugs, and security cameras are often a security risk. Connect them to your guest network instead of your main network. They still get internet, but they can't see your laptop or phone.

Note: this only works if your smart device doesn't need to talk to other devices on your network (some older Sonos setups do, for example). Test before committing.