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Setting up dynamic DNS in the FRITZ!Box

With dynamic DNS you can access your FRITZ!Box as well as applications and services in the home network for which you configured port sharing in the FRITZ!Box over the internet at a fixed domain name. This way you can easily access a NAS system or perform remote maintenance on a computer with Microsoft Remote Desktop, for example, even if the FRITZ!Box's public IP address changes at regular intervals.

Requirements / Restrictions

  • Dynamic DNS is not available when the FRITZ!Box is used as a wireless repeater or in IP client mode. In this case, set up dynamic DNS in your router.
  • The FRITZ!Box must either obtain a public IPv4 address or an IPv6 address from the internet service provider.

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

Setting up dynamic DNS

  1. Click "Internet" in the FRITZ!Box user interface.
  2. Click "Permit Access" in the "Internet" menu.
  3. Click on the "Dynamic DNS" tab. If the tab is not displayed, enable the Advanced View first.
  4. Enable the option "Use DynDNS".
  5. Check whether your dynamic DNS provider is displayed in the drop-down list.
  6. If your dynamic DNS provider is displayed in the drop-down list, select your provider and enter the login information you received from your provider in the corresponding fields.
  7. If your dynamic DNS provider is not displayed in the drop-down list:
    1. Select the entry "User-defined".
    2. Enter your login information and the update URL. You can find detailed information on the format of the update URL in the FRITZ!Box's online help, which you can access by clicking the symbol (Help).
  8. Click "Apply" to save the settings.

Now the FRITZ!Box transmits its current IP address to the dynamic DNS provider every time it connects to the internet so that the FRITZ!Box can always be contacted via its unique dynamic DNS domain name.