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Fritzbox: Mac-address lock - here's how

  • Nov 14, 2025
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So that no one makes unauthorized use of your Wi-Fi, you can strangers lock your MAC addresses in your Fritzbox. We will tell you how to do this.

MAC addresses in the Fritzbox lock

Individual MAC addresses can you lock it in the Fritzbox. For this purpose, a so-called MAC-Filter enable. Here you have to enter only the MAC addresses of devices that are allowed to use your Wi-Fi. All other MAC-IDs are locked and can't connect to your Router.
  1. First, open the user interface of the Fritz box in your Browser and login with your password.
  2. In the left column, click "wireless" then "security".
  3. There you scroll down to the section "Wi-Fi access restrict".
  4. You put at the very bottom of a check in the "Wi-Fi access to known WLAN devices restrict".
  5. Now click on "Wi-Fi add device" and enter the MAC address of your device. Repeat this step for all devices to use the network later.
  6. Save your Changes finally, with "Apply". After that, all the alien MAC locked out addresses.
Fritzbox: Mac address blocking
Tip: you Have to enter friends visiting who want to use the Wi-Fi, you must have the MAC addresses of all individually. Instead, a temporary guest access in the Fritz box is a.

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