Synology DDNS Configuration made Easy

[jarvil]

What is the name of the domain?

any hosted domain on cloudflare

What is the issue you’re encountering

Synology DSM does not support Cloudflare DDNS

What steps have you taken to resolve the issue?

This is the solution for Synology users using DSM7+
For older DSM versions please see https://community.synology.com/enu/forum/1/post/145636

Configuration

1. Follow the setup instructions provided by Cloudflare for DNS-O-Matic to setup your account. You can use any hostname that is already setup in your domain as an A record that is not proxied by Cloudflare.
2. On your Synology under DDNS settings, select Customize Provider then enter in the following information exactly as shown.

Service Provider: DNSomatic
Query URL: https://updates.dnsomatic.com/nic/update?hostname=__HOSTNAME__&myip=__MYIP__

3. Click save and thats it!

Usage

1. Under Synology DDNS settings select Add.
2. Select DNSomatic from the list Now enter the hostname you used in step one above with the username and password for DNS-O-Matic. Leave the External Address set to Auto.
3. Click Test connection and if you set it up right it will come back like the following…

5. Once it responds with Normal the DNS should have been updated at Cloudflare.
6. You can now select OK to have it use this DDNS entry to keep your DNS updated.

You can click the new entry in the list and select Update to validate it is working.
This process works for IPV4 addresses. Testing is required to see if it will update a IPV6 record.
Source: https://community.synology.com/enu/forum/1/post/188758

What feature, service or problem is this related to?

DNS records