DDNS

DDNS (Dynamic Domain Name Service) simplifies connecting to your DiskStation over the Internet by mapping a hostname to its IP address. For example, DDNS allows you to access your DiskStation using a domain name (e.g., www.john.synology.me), with no need to remember an IP address (e.g. 172.16.254.1).

Setting up DDNS

You can point an existing hostname at the IP address of your DiskStation, or register for a new one provided by Synology or several other DDNS providers. Please consult each provider for more details regarding hostname registration.

To set up a DDNS hostname:

  1. Click the Add button.
  2. A dialog box appears prompting you to edit the following settings:
  3. Click Test Connection to see if settings are correct.
  4. Click OK to save and finish.
  5. If you have selected Synology as the service provider, a message box will appear if there's no matching SSL certificate for your DDNS hostname, recommending you to sign a Let’s Encrypt certificate for the hostname and set it as the default certificate. Click Yes.

    Note: If an SSL certificate is already matched for your DDNS hostname, a message box will appear and ask you whether you want to set it as the default certificate. This message will appear every time the DDNS hostname is edited. For more information on SSL certificate, please refer to here.

After setup is complete, you can access your DiskStation over the Internet by entering the DDNS hostname in a web browser.

Requirements and Limitations

Managing Hostnames

Use the following buttons to manage existing hostname entries:

Setting Up a Customized DDNS Provider

You can add a customized DDNS provider if your provider does not already appear in the service provider list.

To set up a customized DDNS provider:

  1. Click Customize.
  2. A dialog box appears prompting you to enter the following settings:
  3. Click Save to add the customized service provider to the list of DDNS service providers.

Requirements and Limitations