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Fritzbox behind the cable modem to operate all the settings

  • Oct 19, 2025
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Your Fritzbox, you can also operate behind a cable modem. You read in this practice tip on how to do this.

Fritzbox behind the cable modem to operate – so it works

  1. First, connect the cable modem to the cable connection. You can use the supplied cable.
  2. Connect to the Fritzbox via LAN cable to the cable modem.
  3. Then connect to the Fritzbox via LAN cable to the PC and open the "fritz.box" in the Browser.
  4. Enable the expert view, by clicking the top right on the three points, and "expert mode" to select.
  5. Then, navigate to "Internet" > "access data" and select "Internet connection via LAN 1 and under "mode" the Option "Internet connection, self-build".
  6. Below you will find the section "access data". Here you can select "credentials are not required". In the "connection settings" put a tick in "obtain an IP address automatically".
  7. Then save the Changes with "Apply". Thus, the setup is complete.
Fritzbox behind the cable modem
As the port in the Fritzbox works, we can tell you in the next tip.

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