zoellert / cloudflare-dyndns

A simple DynDNS server with an HTTP endpoint for FritzBox router, Securepoint UTM and more to update your private ip-address in your Cloudflare zone.

Simple DYNDNS Server for Cloudflare

A simple DynDNS server with an HTTP endpoint for FritzBox router, Securepoint UTM and more to update your private ip-address in your Cloudflare zone. Currently, only IPv4 addresses are supported.

Environment variables

Environment Variable	Description	Example-Value
APP_MODE	Application / log level	release \ debug
APP_PORT	Webserver port	8080
CLOUDFLARE_API_KEY	Global API Key (Cloudflare User Settings)	9e1a9405beaa42158ba179c0eb637651
CLOUDFLARE_ZONE	Name of the zone / domain	your-domain.de
CLOUDFLARE_MAIL	Email address used for your Cloudflare user account	[e-mail]
UPDATE_PASSWORD	Password used to authorize the update request with the username "update"	test123456#

Setup

go build

Use a reverse proxy for ssl encryption!

Docker Setup using Docker-Hub

Run Docker container:

docker run --name <container-name> -d \
    --restart=always \
    -p 127.0.0.1:8080:8080 \
    -e APP_MODE="release" \
    -e APP_PORT="8080" \
    -e CLOUDFLARE_API_KEY="<your-cloudflare-key>" \
    -e CLOUDFLARE_ZONE="<your-cloudflare-zone>" \
    -e CLOUDFLARE_MAIL="<your-cloudflare-email>" \
    -e UPDATE_PASSWORD="<password for update user>" \
    zoellert/cloudflare-dyndns:latest

Manual Docker Setup

Clone Project.

Build Docker container: docker build -t cloudflare-dyndns:0.1 .

Run Docker container:

docker run --name <container-name> -d \
    --restart=always \
    -p 127.0.0.1:8080:8080 \
    -e APP_MODE="release" \
    -e APP_PORT="8080" \
    -e CLOUDFLARE_API_KEY="<your-cloudflare-key>" \
    -e CLOUDFLARE_ZONE="<your-cloudflare-zone>" \
    -e CLOUDFLARE_MAIL="<your-cloudflare-email>" \
    -e UPDATE_PASSWORD="<password for update user>" \
    cloudflare-dyndns:0.1

Use a reverse proxy for ssl encryption!

Router Setup

Securepoint

Setting	Description	Example
Hostname	Choose a subdomain from your Cloudflare zone	home.your-domain.de
Username	Username for authentication	update
Password	password defined in UPDATE_PASSWORD environment variable	test123456#
Server	Address to your instance of this dyndns server	dyndns-server.your-domain.de

FritzBox

Setting	Description	Example
URL	Address to your instance of this dyndns server	https://dnydns-server.your-domain.de/nic/update?hostname=<domain>&myip=<ipaddr>
Domainname	Choose a subdomain from your Cloudflare zone	home.your-domain.de
Username	Username for authentication	update
Password	password defined in UPDATE_PASSWORD environment variable	test123456#