How to Block Devices on Your WiFi Network

How to Block Devices on Your WiFi Network

Discovered an unknown device on your network? Want to restrict your child's device during certain hours? Most routers offer several ways to block or restrict specific devices from your WiFi network.

Method 1: Change Your WiFi Password

The simplest solution for blocking unknown devices: change your WiFi password in the router admin panel under Wireless Settings. All currently connected devices will be disconnected and will need to enter the new password to reconnect. Only share the new password with people you trust.

Method 2: MAC Address Filtering

Every device has a unique MAC (Media Access Control) address. MAC filtering lets you create an allowlist (only listed devices can connect) or blocklist (listed devices cannot connect).

1. Log into your router admin panel.
2. Navigate to Wireless Settings → MAC Filter or Access Control.
3. Find the MAC address of the device you want to block (visible in the Connected Devices or DHCP client list).
4. Add the MAC address to the blocklist and save.

Limitation: MAC filtering can be bypassed by technically-savvy users who spoof their MAC address. It is effective against casual intrusions but not determined attackers.

Method 3: Parental Controls / Access Schedules

Most modern routers have built-in parental controls that let you schedule when specific devices can access the internet. Find this under Parental Controls or Access Restrictions in your router admin panel. You can block internet access during school hours, bedtime, or any custom schedule.

Method 4: Guest Network Isolation

If you want to allow internet access but block access to your main network's devices, move the device to your guest network. Guest network AP isolation prevents devices from communicating with each other or with your main network.