Fritz Box 6490 Teredo filter deactivate

How do you remove the Teredo filter within the FritzBox

If there are connection problems in a VPN network or in connection with Internet, you can deactivate the Teredo filter in the FritzBox. This will make sure that you are able to connect to the Internet once more.

Go to and click on the “Internet” tab.

Go to”Filters,” then “Filters” submenu and on to “Lists”. You can now disable this “Teredo filter active” option. Based what model you have of the FritzBox You will be able to find this option within your advanced setting. Make sure you confirm the changes you’ve made.

How is Teredo filter accountable for?

In general, Teredo is a tunneling protocol that allows IPv4 computers to utilize the standard 6to4 securely through tunnels. If you have your IPv6 Internet connection Your FritzBox is blocking UDP port 3544 due to security reasons, which means that you won’t be able to access the Internet through certain applications. If you remove Teredo, or deactivate the Teredo filter you are enabling the FritzBox to connect to the Internet through IPv6. IPv6 protocol. In accordance with the AVM FritzBoxes without Toredo are not protected by their FritzBox firewall. In any event, you must make sure your data is secure when you turn off your Teredo filter.