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Synology DSM (DiskStation Manager)

Support level: Community

What is Synology DSM​

Synology Inc. is a Taiwanese corporation that specializes in network-attached storage (NAS) appliances. Synology's line of NAS is known as the DiskStation for desktop models, FlashStation for all-flash models, and RackStation for rack-mount models. Synology's products are distributed worldwide and localized in several languages.

-- https://www.synology.com/en-global/dsm

caution

This is tested with DSM 7.1 or newer.

Preparation​

The following placeholders will be used:

  • synology.company is the FQDN of the Synology DSM server.
  • authentik.company is the FQDN of the authentik install.

authentik configuration​

Step 1​

In the Admin interface of authentik, under Providers, create an OAuth2/OpenID provider with these settings:

  • Name: synology
  • Redirect URI: https://synology.company/#/signin (Note the absence of the trailing slash, and the inclusion of the webinterface port)
  • Signing Key: Select any available key
  • Subject mode: Based on the Users's Email (Matching on username could work, but not if you have duplicates due to e.g. a LDAP connection)
  • Take note of the 'Client ID' and 'Client secret'

Step 2​

Create an application which uses this provider. Optionally apply access restrictions to the application.

Synology DSM configuration​

To configure Synology DSM to utilize authentik as an OpenID Connect 1.0 Provider:

  1. In the DSM Control Panel, navigate to Domain/LDAP -> SSO Client.
  2. Check the Enable OpenID Connect SSO service checkbox in the OpenID Connect SSO Service section.
  3. Configure the following values:
  • Profile: OIDC
  • Name: authentik
  • Well Known URL: Copy this from the 'OpenID Configuration URL' in the authentik provider (URL ends with '/.well-known/openid-configuration')
  • Application ID: The 'Client ID' from the authentik provider
  • Application Key: The 'Client secret' from the authentik provider
  • Redirect URL: https://synology.company/#/signin (This should match the 'Redirect URI' in authentik exactly)
  • Authorization Scope: openid profile email
  • Username Claim: preferred_username
  • Save the settings.

See also:​

Synology DSM SSO Client Documentation