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Guides

Delta and Freedom: your own router on fibre

Delta Fiber lets you use your own modem or router, and Freedom Internet also offers internet over Delta’s fibre. First read Your own router behind your provider for the background, such as CGNAT and IPv6.

What details you need

This differs per provider and per subscription, so first write down what you need:

  • The VLAN ID for internet, and possibly for TV and telephony.
  • Whether the connection is PPPoE (with a username and password) or DHCP.
  • Whether you have a public or fixed IPv4 address.

Delta publishes the VLAN settings for internet and TV. Freedom has its own explanation and a community with examples for routers such as MikroTik, Ubiquiti and Linux. Use your provider’s details, not a guess.

Setting up

  1. Connect your router, with its WAN port, to the fibre modem. With Delta you can also put the own modem in bridge mode and hang your router behind it.
  2. Create the VLAN your provider names on the WAN port.
  3. Set up PPPoE or DHCP, as the provider prescribes.
  4. Check the MTU. With PPPoE it is often 1492.
  5. Restart the router and check your address with curl https://geekstation.nl/ip.

IPv6

Both use IPv6. Turn on a DHCPv6 client for prefix delegation in your router, and make sure the firewall blocks incoming IPv6 traffic. Handy for working with ranges: the IPv6 Calculator.

Opening ports

Compare your public address (curl https://geekstation.nl/ip) with the WAN address of your router. If they are equal, you can open ports. Test it with curl https://geekstation.nl/poort/443. Otherwise you are behind CGNAT, see the general guide.

If it does not work

  • Check the VLAN ID and whether the login is right.
  • Restart both the fibre modem and the router.
  • Ask the provider whether the line is tied to a MAC address.

Provider settings change. Check them with Delta or Freedom before you start.