FRITZ!Box 4020 Service - Knowledge Base

FRITZ!Box 4020 Service
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Configuring "Existing connection over wireless LAN" in the FRITZ!Box

You can connect the FRITZ!Box to a wireless router (for example belonging to a neighbor) over wireless LAN (WiFi) so that all of the network devices in the FRITZ!Box home network can use the router's internet connection.

In this case, the FRITZ!Box functions as a router itself and and provides its own network with its own network address range. You can use the wireless router's wireless network, or you can also use the FRITZ!Box's wireless network with its separate security settings.

Requirements / Restrictions

  • The FRITZ!Box must use a different IP network than the wireless router.

    Note:If the FRITZ!Box's IP settings are the factory settings, then they are automatically adjusted when you set up the connection over wireless LAN (IP network:, subnet mask:

  • Devices connected to the wireless router cannot access devices connected to the FRITZ!Box.
  • You can no longer set up wireless connections to the FRITZ!Box with WPS (push button method).

Note:All instructions on configuration and settings given in this guide refer to the latest FRITZ!OS for the FRITZ!Box.

1 Configuring the FRITZ!Box

  1. Click "Internet" in the FRITZ!Box user interface.
  2. Click "Account Information" in the "Internet" menu.
  3. Select "Existing connection over wireless LAN" from the drop-down list "Internet connection via".
  4. In the "Wireless LAN devices" section, use the name of the wireless network (SSID) to select the wireless network you want to connect the FRITZ!Box to. If the wireless network is not listed, click the "Refresh List" button first.
  5. If the wireless router's wireless network is protected with a password, enter it in the "Network key" field.
  6. Click "Apply" to save the settings.

Now the FRITZ!Box and the wireless router are connected over wireless LAN. All network devices in the FRITZ!Box home network can use the router's internet connection.