DynDNS for Fritz.Box

Use your public domain/hosting as dyn dns.

Author: Carsten Walther

Date: March, 27th 2022

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Requirements

• PHP min. 7.4
• Composer

Installation

Download this repository. Make shure you have installed composer. Unzip the package e.g. to /var/www/dyndns/ an run

composer install

Done.

Configuration

Add a file config.php into your root folder with the following content:

<?php

const USERNAME = 'username'; // have to be the same in your fritzbox dyndns settings
const PASSWORD = 'password'; // have to be the same in your fritzbox dyndns settings

const PROTOCOL = 'http';
const PORT = '80'; // the port you have opened
const PATH = '/'; // path to your service

Configure your FritzBox

At first you have to set port forwarding to make your local server reachable from outsite.

After that you have to add a user defined dyndns.

Add the following data:

Update-URL:

subdomain.yourdomain.com/index.php?mode=update&ipaddr=<ipaddr>&ip6addr=<ip6addr>&username=<username>&pass=<pass>&domain=<domain>

Keep the placeholder in the brackets!

Domainname:

subdomain.yourdomain.com

Domainname is not used at the moment!

Username:

username

Have to be the same like set in your config.php file!

Password:

password

Have to be the same like set in your config.php file!

Running local

If everything is done you can run this locally via the build in php webserver for testing purposes. You have to call

php -S localhost:8000

How to use

Open your browser and put the assress into the address bar and hit enter.

Then you will be redirected to the correct IP address of your local server.